Основание: Осман

Osman Bey, now leading a state, aims to unify the Turks under his banner, and influence border principalities. Bayhan Bey and his rival Begüm Hatun attend Osman Bey's wedding, possibly revealing intentions towards his daughter, Fatma Hatun. The arrival of the Caliph's vizier Emir Ömer stirs tension, his purpose unknown to Osman. Emir Ömer secretly informs Karesi Bey of the theft of sacred relics, prompting Karesi to seek them out and offer allegiance to Osman Bey. As Osman expands his territory, Byzantine hopes rest on Commander Lucas, who holds the sacred relics and plots against the Turks. Lucas tries to recruit Holofira, impacting her and Orhan Bey’s paths. Alaeddin Bey is imprisoned in a castle as Osman continues his conquests, facing Lucas's schemes.

Despite numerous challenges, Karadin Castle becomes Kayı property. Alaeddin Bey is exposed to danger during the conquest. Commander Lucas devises a plan to find and exploit the weaknesses of Osman Bey and Karesi Bey, aiming to set them against each other. Lucas, holding sacred relics, plans to use them as leverage. Osman Bey's tribe is alarmed when the relics are stolen, and he confronts Lucas. The fight for Karadin Castle ensues with Begüm Hatun and Bayhan Bey vying for control, while Bala Hatun remains disinterested. Holofira, under Lucas's orders, arrives uninvited at the celebration, rekindling her love with Orhan Bey, who proposes marriage. Saruca and Yusuf compete for Fatma Hatun's affection. During Gonca Hatun's difficult childbirth, Begüm and Hazal Hatun clash, with Begüm accusing Hazal of poisoning her.

Osman Bey's pledge to protect the sacred Islamic relics elates the Kayı tribe but fuels Karesi Bey's jealousy. To thwart Osman, Lucas sets a trap in Karadin, complicating Begüm Hatun's situation. After her setback, Begüm plots to undermine Bala Hatun. Meanwhile, it's revealed that Cecilia poisoned Gonca Hatun, straining her relationship with Holofira. Orhan Bey devises a plan to kidnap Holofira from her arranged marriage, but they encounter a trap. Lucas and Karesi plan to financially damage Osman by building a bridge. Osman discovers Karesi's deceit. The unfolding drama sees Gonca's feelings towards Holofira change, and the possibility of Orhan and Holofira's reunion.

Osman Bey's escape angers Lucas and Karesi Bey, who plan a new move against him. During a wedding in Kayı Oba, Lucas incites a Greek rebellion in Söğüt, shocking everyone. Lucas also pressures Karadin Castle, putting Osman Bey in a tight spot as he deals with both threats. Osman Bey escapes a trap, while Orhan Bey and Holofira face danger from Lucas' men. With no obstacles left, Osman Bey plans a grand wedding for Orhan and Holofira. Tensions rise between Gonca Hatun and Holofira due to lingering pain. Begüm and Hazal Hatun notice the strain and may exploit it. Gonca Hatun considers leaving Kayı Oba with Alaeddin Bey. Yusuf and Saruca vie for Fatma Hatun's affection, leading to a showdown between them.

Osman Bey rewards Karesi Bey with Karadin Castle for thwarting Lucas's plan to capture it, initiating trade despite Karesi Bey's potential hidden motives. Meanwhile, Osman Bey tackles the escalating Greek Rebellion in Söğüt, aiming to restore peace by targeting its leader, Arcadeus. Sofia teams up with Lucas to seek revenge, severely injuring Baysungur, pushing Osman Bey to focus on avenging him. In the Kayı Obası, tensions rise between Gonca Hatun and Holofira, drawing Hazal and Begüm Hatun into the conflict. Bala Hatun intervenes with impactful warnings, while her strained relationship with Begüm Hatun adds to the discord.

Osman Bey prepares to strike Byzantium and Karesi Bey by targeting Akhisar, while Karesi Bey enforces martial law in Karadin to strengthen his grip. As Osman Bey focuses on his conquest, Bala Hatun works to maintain peace amidst rising tensions between Gonca and Holofira, further aggravated by Begüm Hatun. Meanwhile, Sofia creates turmoil by kidnapping Fatma, Saruca, and Yusuf, shocking Söğüt Pazar. Bala Hatun swiftly takes action to rescue Fatma and restore order.

Osman Bey is deeply disturbed by the kidnapping of Fatma Hatun, Saruca, and Yusuf by Lucas and Sofia, who demand Söğüt in exchange for Fatma. Though appearing to surrender, Osman Bey devises a plan to rescue her without losing Söğüt. Meanwhile, Karesi Bey, sensing Osman Bey's vulnerability, declares war and allies with Gencer Bey to strike. Lucas manipulates Yusuf and Saruca to uncover Osman Bey's strategies, testing the loyalty of Begüm Hatun and Bayhan Bey. Amid rising tensions, Orhan and Alaeddin take great risks to rescue Fatma, further intensifying the conflicts.

Sofia seeks revenge on the Kayis by orchestrating a deadly trap, endangering Bala Hatun and leaving Gonca Hatun and Holofira's fates uncertain. Lucas suspects a traitor in their ranks and uncovers Ilbay, who faces the threat of execution. Tensions rise as Boran and Cerkutay blame Begüm Hatun and Yusuf for their struggles, further fueled by Begüm's disruptive actions in the council and market. Bala Hatun steps in to address the escalating discord, while Gonca Hatun must navigate the delicate revelation of Begüm Hatun's love for Osman Bey.

Osman Bey seeks justice for the attack on Bala Hatun and his family, while Sofia sets a trap involving Osman’s long-lost daughter Halime, whom she raised as an enemy. Tensions rise as Poena unknowingly attacks her sister Fatma at Söğüt Market. Suspecting Gencer, Begüm, or Bayhan as traitors aiding Lucas, Sofia, and Karesi, Osman monitors them closely. After discovering Begüm Hatun's meeting with Karesi Bey, he imprisons her, but she escapes and seeks refuge with Karesi, who proposes to her. Osman tracks Begüm's kidnapper, confronts Karesi Bey, and blood is shed in the process. Amid all this, Osman Bey is determined to protect his family and take revenge against Lucas and Sofia's growing threats.

Osman Bey, wounded by Poena’s arrow while seeking Sofia’s hidden secrets, remains resolute in defeating Sofia and Lucas, who scramble to escape while managing Poena. Sofia plans to use Poena to infiltrate the Kayı Tribe and target Osman Bey and Bala Hatun. During Bala Hatun's visit to Halime's grave, Poena attempts to kill her. Amidst growing tensions, Karesi Bey declares war on Osman Bey with Lucas’s support, while Begüm Hatun risks her life by warning Osman of Karesi’s plans. Sofia and Lucas launch an attack on Osman’s headquarters, threatening Bayhan Bey’s life and impacting the war’s outcome. Osman Bey must face Karesi’s alliances and stand alone against mounting threats.

Osman Bey besieges Akhisar Castle, confronting both the Mongols, who devastate Turkish tribes after he refuses their tax demands, and Sofia, who seeks revenge with Lucas's support. As massacres unfold, Osman Bey remains focused on his conquest despite mounting threats. Poena supplies Sofia with vital camp information, complicating Osman’s plans further. Amid escalating tensions, Bala Hatun addresses the Mongol envoy, while Osman devises strategies to prevent massacres, outmaneuver Sofia’s traps, and achieve victory—all relying on his leadership and tactical brilliance.

The Mongol Commander Ulugan challenges Osman Bey at the Kayı Tribe, threatening his reputation and life, while the Mongols brutally torture Prince Orhan in Karacahisar, forcing Osman to plan his rescue. A poison spreads through the tribe, endangering lives, including Poena’s, as Alaeddin Bey seeks an antidote and Bala Hatun fears losing Poena without knowing she is her daughter Halime. Amidst these challenges, Osman Bey tightens defenses against the Mongols, while Ilbay devises plans to undermine them, leaving the tribe to navigate multiple critical threats testing their strength and unity.

Ulugan's poison wreaks havoc on Osman Bey's lands, forcing Osman to sacrifice himself and surrender to save his people. While paraded as a trophy in captivity, his resolve remains unshaken. Within the Kayı tribe, Bala Hatun confronts Begüm Hatun over her disruptive actions stemming from her love for Osman, while Begüm counters Ilbay's betrayal with a surprising move. Orhan Bey, saved from execution, now embarks on a mission to rescue Osman. Amidst the turmoil, Holofira reveals her pregnancy to Bala Hatun, offering a glimmer of hope, but a raid by Ulugan's forces threatens their fleeting joy.

Osman Bey escapes execution at the last moment, but the Kayı tribe faces a life-or-death struggle due to the Mongol-Byzantine alliance and Ilbay's betrayal. Ulugan announces Ilbay Bey as the new lord of the Kayıs, leaving Osman Bey enraged and vowing revenge. Ulugan decides to execute Osman Bey in front of the Kayı tribe but changes his mind and takes him on a dangerous journey instead. Osman Bey escapes with Poena, who reminds him of Halime. Bala Hatun, Orhan, and Alaeddin plan to save Osman Bey but fall into a trap set by Sofia, Lucas, and the nokers. Osman Bey, Bala Hatun, and Poena are trapped on the edge of a cliff, where Poena takes a big hit during their fight with Lucas and the nokers.

Osman Bey rallies to reclaim his losses and confronts his enemies, with Yusuf and his alps joining his cause. While Bala Hatun and her allies support him, Begüm Hatun, driven by revenge, opposes Bala. Yusuf and the alps are captured by Lucas, who plans Yusuf's execution in the arena to weaken Osman Bey's resolve. Osman Bey acts swiftly to rescue them, facing peril as he confronts Lucas, Sofia, and Ulugan in the arena to defend his people and thwart their plans.

Osman Bey aims to reclaim Söğüt from Ulugan, restoring hope among his people and setting an unexpected trap for his foe. Meanwhile, Cerkutay and his son Gazi are captured, leaving their fate uncertain and causing distress for Ülgen. Sofia escalates tensions by capturing Bala Hatun, leading to a confrontation with Begüm Hatun, who sets fire to Bala's hut. Osman Bey rescues Bala but is consumed by a deep desire for revenge after witnessing her dire condition.

Osman Bey is devastated by the treacherous martyrdom of Bala Hatun and vows to live only for her revenge. He learns that Begüm Hatun burned the hut and sets out to find Begüm and İlbay. Bala Hatun's martyrdom deeply affects the Kayı people and her children, Alaeddin, Fatma, and Orhan. Osman Bey stops Bala Hatun's burial preparations in Söğüt, deciding she will be buried in the Kayı tribe next to her child Halime. As Osman Bey prepares to take back the tribe, he mobilizes all resources against the numerically superior Ulugans and İlbay. Great dangers await Osman Bey and his army as they strive to reclaim the Kayı tribe and seek justice for Bala Hatun. Meanwhile, Poena, who witnesses these events, is struggling to remember her past and is confused as she gets to know the Kayı people.

Sofia continues to torment Bala Hatun in captivity, while Halime, having overheard Sofia's conversation, confronts her. Bala Hatun, now certain her daughter is alive, plans her escape to reunite with her. Osman Bey, lacking proof of Bala's survival, learns from Halime/Poena that she is alive. Determined, Osman sets out to rescue Bala, but Sofia moves her to a hidden monastery, posing yet another obstacle as Osman fights to reunite with Bala and their daughter.

In the Kayı tribe, joy returns with the reunion of Bala Hatun and the arrival of Ramadan, even as Osman Bey and his people face the growing threat of Ulugan and Ilbay, who conspire to weaken his power by turning other beys against him. Amidst the joy, Bala Hatun focuses on capturing her enemy Sofia, ultimately bringing her to the camp. Meanwhile, Osman Bey faces a bloody struggle against Ulugan, who, with external military support, corners him and endangers his loyal alps, leaving the tribe to fight against treachery and ambition while holding onto their unity and faith.

Esenbike Hatun's dramatic arrival at Kayı Oba creates tension as she demands a hefty tax from Osman Bey or threatens to claim his daughter Fatma for her son Sargun. Osman Bey, resolute in protecting his family and people, devises a risky plan to escape this predicament while avoiding conflict with Olcaytu. Meanwhile, Bala Hatun, determined to find her daughter Halime, captures Sofia and stakes everything on negotiating her release in exchange for Halime’s whereabouts, uncovering a potential truth about Poena's identity.

Osman Bey, determined to uncover Esenbike Hatun's true intentions, invites her to a secret camp while confronting Ulugan's ambush with his loyal Alps, ultimately forcing Ulugan to kneel at swordpoint. Meanwhile, Bala Hatun, with Alaeddin Bey and Gonca Hatun's help, follows Halime's trail to uncover her identity as Poena, but faces the challenge of protecting the nun holding this secret. As Esenbike Hatun plots to isolate Osman Bey by seeking alliances with Turkmen lords, Osman Bey devises a strategy through Ulugan to counter her scheme and secure his position among the Turkmen Beys.

Osman Bey exposes Esenbike's treacherous scheme with Ulugan, prompting Esenbike to declare hostility and rally allies for a major attack. With the Turkmen Beys on his side, Osman Bey strategizes to reclaim the Kayı Tribe and defeat his enemies despite threats from all directions. Meanwhile, Bala Hatun seeks to heal a nun she saved, hoping to uncover the truth about her daughter Halime's whereabouts. Alaeddin Bey creates medicines to aid the nun's recovery, raising questions about whether Bala Hatun will realize Halime is closer than she thinks, and if Poena will recognize Halime’s identity.

Osman Bey reclaims his tribe and establishes a new order, gaining the loyalty of influential Turkmen lords like Hasan Alp and Koca Bey, but faces growing threats from within and outside. Kuçar, Olcaytu Khan's ambassador, demands Osman Bey's children as compensation for deaths he didn’t cause, while Commander Gladius, allied with Sofia, arrives with a treacherous plan to defeat him. Amid external pressures, internal tensions escalate between Princes Orhan and Alaeddin, threatening the dynasty's stability. Sofia targets Halime in her latest scheme, but Halime, armed with the truth, prepares to confront her, adding complexity to the already turbulent situation.

Osman Bey faces a heartbreaking decision that tests his loyalty to his state and his love for his children, shaking the tribe's balance. Meanwhile, the escalating rivalry between Prince Orhan and Prince Alaeddin threatens the unity of the tribe, also straining Cerkutay and Boran Bey's relationship. As tensions rise, Osman Bey’s enemies seize the opportunity to act, with Kuçar and Claudius scheming a dangerous plan that demands Osman Bey sacrifice his own kin. Amidst the chaos, Osman Bey and Bala Hatun reunite with their long-lost daughter Halime, who is trapped in turmoil, teetering on the edge—both physically and emotionally—as she faces a life-altering decision.

The Kayı tribe faces mounting trials as Halime’s tragic fall off a cliff leads to turmoil, Sofia and Bala Hatun clash over blame, and Alaeddin and Gonca are held captive by Kuçar with Gonca's fate hanging in the balance. Amid sorrow, Holofira's conversion to Islam brings joy, as Orhan Bey plans to confront the Kuçar threat to save Alaeddin and Gonca. Meanwhile, Osman Bey battles Claudius and Kuçar, navigating dangerous alliances and traps while striving to protect his family and tribe from further loss, including Fatma Hatun, pursued by Begüm Hatun. Despite the threats, Osman Bey's resilience fuels his efforts to outwit his enemies and safeguard his people.

Osman Bey's strategic agreement with Sofia stirs conflict among the beys, raising doubts about trust and unity within the tribe. Meanwhile, Kuçar plots to isolate Osman Bey and exploit Hasan Bey's departure to incite chaos, and Claudius devises a coup threatening the fragile alliance between Osman and Sofia. As Bala Hatun and Halime embark on a perilous journey to find Alaeddin and Gonca, Alaeddin risks everything to save Gonca from Kuçar's ruthless schemes. Amid the shadows of captivity, Orhan Bey faces challenges that could either mend or deepen the rift with his brother. With his children's lives in peril, Osman Bey sets out on a bold mission, seeking both rescue and revenge, aiming to deliver a decisive blow to his enemies, Kuçar and Claudius.

Osman Bey prepares for conquest, seeking strategic gains in İznik while tensions rise within his enemies’ alliance. Turgut Gazi’s return sparks anticipation, and Bala Hatun inspires warriors with faith and unity. Meanwhile, Kuçar plots revenge, and Begüm Hatun falls into Bala Hatun’s trap, setting the stage for the next clash.

Osman Bey’s sudden council decision shakes the tribe as he prepares for conquest, alarming Byzantium. The Emperor sends Claudius and Sofia to counter him, while Yiğit Bey secretly allies with Claudius. Amid rising tensions, Osman confides in Turgut Gazi, Bala Hatun assigns a mission to Halime and Fatma, and Sofia renews her schemes. As Osman marches with his army, Claudius sets a trap that threatens his campaign.

Osman Bey swiftly establishes a headquarters in Göynük upon learning of Claudius' defensive preparations in Mudurnu, suspecting a traitor among his ranks. Meanwhile, Claudius fortifies Mudurnu, anticipating Osman’s arrival, while Sofia incites rebellion in Göynük, forcing Osman Bey and Bala Hatun to fight on two fronts. During a brutal confrontation, Sofia critically wounds Halime, shaking Osman and Bala to their core. Despite enemy schemes, Osman successfully conquers Mudurnu, only to face Claudius’ final hidden trap, threatening the peace of the newly claimed territory. The fate of Mudurnu and Osman’s forces now hinges on his ability to counter this treacherous move.