Season 4

Osman Bey establishes his headquarters in Yenişehir, acting on crucial information from his spy in Constantinople. He faces threats from Northern warriors Olof and Frigg. Bala Hatun and Malhun Hatun prepare for a market in Yenişehir, leading to tensions between Bengi Hatun and Malhun Hatun. The competition between Aktemur and Alçiçek adds to the growing tension.

Osman Bey thwarts Kantakouzenos' plans in Constantinople, but the cunning strategist persists in his game. Kantakouzenos initiates a new strategy, enlisting Olof's aid as the first step. Olof, driven by revenge for his brother Saga, arrives in Yenişehir with his men at Kantakouzenos' behest. Their goal is to besiege Osman Bey, plotting to attack him from both external and internal fronts.

Olof's personal stake in Yenişehir drives him to take risks, while his lover Frigg poses a threat to Malhun Hatun. In Constantinople, Kantakouzenos involves Ofelia, further complicating matters. Osman Bey takes on the responsibility of confronting and resolving the chaos, arranging a meeting with Olof in the arena.

Osman Bey is ambushed by Olof, revealing a larger scheme involving the kidnapping of his sons and false accusations against Öktem Bey. Ofelia is suspected as the prime culprit. Emperor Andronikos orders Olof to kill Osman Bey and his daughter, Ophelia, escalating the danger for the family.

The attack on Aktemur has greatly shaken Osman Bey's trust, leading him to establish a court to address the situation. Both Öktem Bey, who is accused of stealing gold, and his daughter, Alçiçek Hatun, who injured Aktemur Bey, will face trial. Osman Bey's decision to establish a court signifies his commitment to ensuring justice is served in these matters.

Osman Bey and his soldiers are trapped in a mine after Olof discovers their hiding place. Their survival is uncertain, causing growing concern. Malhun Hatun urges Bala Hatun and the soldiers to rescue Osman Bey. The main question now is how they will escape the mine and overcome the imminent danger.

Ismihan Sultan opposes Osman Bey's ambitions in Yenişehir. The control of the Marmaracik Citadel is contested. Osman Bey battles self-doubt while planning to conquer Köprühisar. Olof seeks new tactics after losing to Osman Bey. Intrigue and developments continue to unfold.

Osman Bey remains determined to conquer Köprühisar and is willing to take risks to achieve his goals. However, complications arise in the love story between Aktemur and Alçiçek, as Bayındır becomes an obstacle. Ismihan Sultan grows uneasy about Osman's ongoing conquests. Conflicts and challenges arise as Osman's ambitions clash with the desires of those around him.

Tensions escalate as Ismihan Sultan exposes Osman Bey's headquarters and plans. She seeks to hold him accountable and employs various strategies, including attacks by Olof and Frigg. Ismihan Sultan aims to isolate Osman Bey, seize his principality, and claim his properties. The conflict intensifies as they both strive to protect their interests and maintain their positions.

Osman Bey and his Alps attempt to capture İnegöl castle from Turgut Bey, but face opposition from Turgut Bey, Kantakouzenos, and Ismihan Sultan. Negotiations ensue, with Osman Bey demanding the castles acquired through sacrifice. Olof plans to meet with Ismihan Sultan. Meanwhile, Osman Bey works to install Sultan Mesud on the throne, unaware that Konya has been handed over to a Mongol commander.

Osman Bey is captured by Ismihan Sultan, and his escape attempts fail. However, Alaeddin Bey reveals that Osman Bey is in the palace under Sultan Alaeddin's supervision. Osman Bey confronts Sultan Alaeddin, who offers his release if Alaeddin Bey stays with him. Ismihan Sultan plans to seize Yenişehir and creates conflict between Bala Hatun and Malhun Hatun.

Osman Bey receives crucial information from Sultan Mesud about Ismihan Sultan's plans involving a significant seal. To counter her schemes, Osman Bey assigns Bala Hatun to acquire the seal. Sultan Alaeddin issues a death warrant for both Osman Bey and Sultan Mesud, leading to severe injuries for Sultan Mesud. Determined to protect the castles, Osman Bey takes action. Ismihan Sultan manipulates the situation in Yenişehir, worsening the famine, but Malhun Hatun devises plans to counter her.

Ismihan Sultan captures Sheikh Edebali and uses him as bait to trap Bala Hatun in Marmaracik Fortress. Osman Bey confronts Olof and Ismihan Sultan when he attempts to rescue them. Ismihan Sultan is determined to achieve her goals and demands the presence of Sultan Mesud to spare their lives. In the meantime, a contagious disease spreads in Sogut, causing concern. Malhun Hatun and Kumral Abdal face unexpected danger while searching for a cure. Finding an antidote becomes crucial to save the city from destruction.

Osman Bey is captured by Sultan Alaeddin at Marmaracik Fortress. Sultan Alaeddin issues a death warrant, but Ismihan Sultan has a different plan for Osman Bey. She intends to have him abducted by Kantakouzenos and Olof, claiming he has escaped. Ismihan Sultan also decides to expel the Kayis from Yenisehir. The people face famine and disease, adding to their difficulties. Osman Bey and his tribe confront internal conflicts and external threats, making their situation challenging.

Tensions rise as Mongolian Commander Nayman demands a ransom for Samagar's murder. Ismihan Sultan summons Germiyanoglu, Candaroglu, Karesioglu, and Osman Bey. The Beys hold Osman Bey responsible and insist he pay the ransom. However, Osman Bey stands firm, refusing to negotiate. He asserts their equality and rejects paying any price for Samagar's head. Meanwhile, Olof gathers a large Byzantine army, posing a threat to Inegol. Osman Bey faces challenges from both the Mongols and Olof, endangering his principality.

Nayman's arrival in Konya with a large Mongolian force unsettles the people. Osman Bey vows to confront him, rallying the tribes in Gaza for support. However, the nobles hesitate to join him. Ismihan Sultan schemes against Osman Bey, planning to poison Orhan with Alaeddin's sword. Turmoil ensues as news of the poisoning spreads. Bayındır Bey holds a grudge and prepares to confront Osman Bey. Tensions rise, presenting challenges to Osman Bey's leadership and the camp's stability.

Nayman's rage grows when he doesn't receive the expected gold, threatening the sons of Karesi, Candar, and Germiyan Beys. The Beys intervene to protect their children, but Osman Bey decides to fight back. Those who deceive him meet their demise. Nayman is determined to bring bloodshed to the frontiers. Esma confesses to poisoning Orhan, revealing Avci as the manipulator, sparking Malhun Hatun's desire for revenge.

Nayman locates his lost gold but falls into an unexpected trap. Osman Bey remains resolute in his conquests despite internal and external challenges. He sets his sights on Inegol and aims to collaborate with Ismihan Sultan. The method to win her support is uncertain. As Osman Bey approaches Inegol, Nayman seeks a valuable asset. Undeterred, Osman Bey persists in his conquest, while the Hatuns plan to eliminate Frigg.

Oktem Bey's death brings grief to Yenisehir, but Osman Bey remains resolute. Nayman unexpectedly offers Osman Bey a role as his commander, shocking Ismihan Sultan. Ismihan doubts Osman Bey will accept the offer, while Nayman remains confident. Bengi Hatun is disappointed and disturbed by the possibility of Osman Bey's acceptance and confronts him. Nayman confronts Ismihan Sultan for her actions, but she defends herself by claiming loyalty to Osman Bey. Nayman plans to kidnap Turkmen children to strengthen his control, causing concern for Malhun Hatun and Bala Hatun.

Nayman falls into an unexpected trap set by Osman Bey while searching for lost gold. Osman Bey remains determined despite internal and external challenges, continuing his conquests from where he left off. His next target is Inegol, requiring collaboration with Ismihan Sultan. Osman Bey's approach to persuading Ismihan Sultan remains uncertain. As they near Inegol's walls, Nayman becomes fixated on seizing Osman Bey's prized possession. Undeterred, Osman Bey persists in his quest to conquer Inegol. Oktem Bey supports him, and the Hatuns plan to eliminate Frigg.

The martyrdom of Oktem Bey brings sadness to Yenisehir. Nayman surprises Osman Bey with an offer, wanting him to become his commander. Ismihan Sultan believes Osman Bey will reject the proposal, but Nayman remains confident. Bengi Hatun confronts Osman Bey and tries to persuade him with Nayman's offer, becoming disheartened by his hesitation. Nayman questions Ismihan Sultan's loyalty, prompting her to maintain appearances of loyalty to Osman Bey. Nayman plans to kidnap Turkmen children and turn them into nokers, alarming Malhun Hatun and Bala Hatun.

Nayman seeks revenge against Osman Bey, luring Orhan Bey to his headquarters under false pretenses. Osman Bey sets a trap to defeat Nayman in Yenisehir. Finding the seal becomes Osman Bey's priority, while Nayman assigns Bayindir Bey to retrieve it, pursued by Turgut Bey. Bengi Hatun appoints Aktemur as leader, causing discontent among Malhun Hatun and Bala Hatun. Ayse Hatun worries about her son's future. The unexpected arrival of Black Midwife Feristah, Ulgen Hatun's mother, brings surprise but leads to an unpleasant encounter with Cerkutay.

Nayman proposes a one-on-one fight to Osman Bey, with high stakes for victory or defeat. As Osman Bey prepares for the battle, he entrusts his vision to Bala Hatun. Meanwhile, news arrives that Aktemur Bey has taken leadership of the Kargın tribe. Nayman expresses confidence in ruling the frontiers, challenging Osman Bey's fate. The Alps intensively prepare for the battle against Nayman. Ismihan Sultan sees an opportunity to benefit from the conflict between Osman Bey and Nayman.

Despite challenges from Ismihan Sultan and Nayman, Osman Bey persists in his conquests with a clear goal. He prepares extensively for the conquest of Köprühisar. However, a devastating surprise awaits as Ismihan Sultan collaborates with Nayman to destroy Osman Bey. Ismihan assigns Bayındır Bey to assassinate Osman Bey in his mansion, while Bengi Hatun supports Ismihan Sultan. Nayman attacks Osman Bey's war headquarters, and the mansion is engulfed in flames.

Nayman's ruthless raid injures Bala Hatun and sparks Osman Bey's determination for revenge. Turgut Bey and his Alps are captured by Nayman, facing decapitation. Holding Turgut Bey hostage, Nayman threatens Osman Bey's compliance. In response, Osman Bey prepares an unexpected plan. Ismihan Sultan provokes Sultan Alaeddin, solidifying her opposition to Osman Bey.

Nayman seeks an alliance with the Tekfur of Bursa against Osman Bey, causing Osman to confront the Tekfur directly. Ismihan Sultan collaborates with Nayman, planning to eliminate Osman Bey from within. Meanwhile, Osman assigns Cerkutay to counter Nayman's power. The situation intensifies as Osman realizes Nayman's target is Yenişehir.

Malhun Hatun is imprisoned for attempting to kill Ismihan Sultan. Osman Bey is determined to rescue her and refuses to leave her behind. Bala Hatun tries to persuade Bengi Hatun to testify truthfully, but it puts Alçiçek's life in danger. Lord Valens is aware of Osman Bey's plan to crown Sultan Mesud, and Ismihan Sultan plots a trap for him. Osman Bey finds himself in a difficult situation, cornered by these circumstances.

Despite being taken to death row, Osman Bey remains hopeful. Meanwhile, Bala Hatun receives Esrigün, the commander of Gazan Han, and his adopted daughter. On the other hand, Malhun Hatun departs to assist the Kargın tribe.

As Osman Bey continues to pursue his goal of establishing a state, he finds himself facing formidable adversaries. He not only grapples with enemies disguised as friends within his own ranks but also engages in a battle against the Byzantine Empire on the outside. Osman Bey has set his sights on a specific objective: the conquest of the Marmara Fortress, a crucial step towards gaining control over Bursa and Iznik, and further advancing his ambitions.

Osman Bey and his warriors are trapped by Tekfur Valens, but Bala Hatun arrives to support them. Nayman ambushes Malhun Hatun and Fatma's life is endangered. Tekfur Valens discovers Osman Bey's camp, setting the stage for a fierce confrontation. Osman Bey's united followers are prepared to fight by his side.

Nayman's determination to harm Osman Bey leads to a fierce battle, but Osman Bey captures him. Tekfur Valens shifts his focus to destroy Osman Bey with a formidable army, planning an unforeseen scheme.

Osman Bey displays keen awareness of Commander Muzalon's actions and strategically launches a dual-sided attack, resulting in a decisive victory for Osman Bey and his forces over Byzantium and Muzalon's army in the Koyunhisar region. This triumph holds significant implications for both Byzantium and Anatolia, signifying the true beginning of Osman Bey's independent Beylic. Riding across the land, Osman Bey emerges as a respected leader, garnering attention and admiration from the East, West, and Turkmen Beylics.