A.B.I.: A Broken Inheritance

Doğan, a successful surgeon in İzmir, is forced to return to his family, from whom he has been estranged for years, after a struggle in the emergency room. Coming to Istanbul for his sister's wedding, Doğan confronts past issues he thought he had left behind, finding himself in the middle of the power struggles within the Hancıoğlu family. On one side is the authoritarian father, Tahir, and on the other, his ambitious older brother, Sinan. Doğan's arrival disrupts the family dynamics, and Çağla, a young and beautiful lawyer driven by a sense of justice, is unwillingly drawn into this chaos because of her beloved older brother, Behram. Their paths intersect irrevocably, and their destinies begin to be rewritten. Subsequent unexpected events force Doğan, against his will, to remain with his family for much longer than he had planned.

The attack suffered by Tahir Hancıoğlu on the wedding night suddenly drags the Hancıoğlu family into a prosecution investigation and public pressure. As Melek becomes a wanted person on the allegation of wounding her father with a scalpel, time is running out. While Doğan follows the trail to clear his sister and reach the truth, the picture painted by Sinan turns into a line of suspicion that Doğan must follow step by step. On the prosecution side, Çağla tries to establishes a risky balance to both ensure Melek gives her statement and prevent the case from closing in Behram's favor. While Tahir's condition remains critical in the hospital, the tension within the family gradually escalates. Çağla finds Tahir's will in Sinan's car and learns that Sinan has been disinherited and everything has been left to Doğan. This fact upsets the already fragile balances; the investigation intensifies, and Doğan and his family simultaneously enter a pincer of accusations, secrets, and confrontation.

While the Hancıoğlu family is shaken by what happened to Tahir, Melek's arrest on murder charges deeply wounds the family. Shouting that she was kidnapped and is innocent, Melek is sent to prison when a forged passport surfaces. Doğan is caught between his sense of justice and anger, feeling the helplessness of leaving his sister behind iron bars. While the balance within the family is overturned, the possibility of Doğan becoming the head of the family according to Tahir's will ignites the fuse of new conflicts. Behram's dark plans, Sinan's past mistakes, and Çağla's stance between her conscience and reality drag everyone onto a path of no return. While Doğan is determined to push his limits to save Melek, a much greater danger awaits Melek as she tries to survive in prison.

While Doğan and Yılmaz try to find the names behind the armed attack that took place in the container park, Çağla being shot turns all balances upside down. It is realized that the main target of the attack was not Çağla, but the envelope and photos in her hand. Doğan realizes that this dark organization surrounds the family much more deeply than he thought. Despite her wound, Çağla does not step back; she is determined to stay by Doğan’s side to both save Melek and reveal Behram’s truth. On the other hand, while Sinan and Altın are cleaning up in a panic to erase the traces of the past, Didem follows everything step by step and confronts the duo with a blackmail card using the images she has acquired. As the crisis within the family grows, an old photograph that falls into Doğan’s hands opens the door to Behram’s secret past and directs them to a nursing home. In this process, a new nightmare awaits Melek in prison, while new surprises emerge with Genco’s unexpected visit.

Doğan kidnaps Behram from in front of the courthouse, reigniting a past reckoning. Behram's big secrets threaten not only his own but also the dark past of the Hancıoğlu family. For Doğan, this confrontation is the only way to save his sister Melek and alleviate the burden of guilt he's carried for years. When Behram speaks of the black box that will prove his innocence and reveal the real killer of Yusuf Usta, nothing will ever be the same for Doğan. Meanwhile, Çağla experiences the biggest disappointment of her life when she confronts Behram's true identity. Learning that the man she considered her brother has been lying to her for years forces her to question everything she knows about Doğan and the Hancıoğlu family. As suspicions surrounding her father's death deepen, Çağla is forced to suppress her emotions and find herself caught between two fires in order to uncover the truth.

Doğan and Çağla find themselves unexpectedly in the middle of a dangerous game set by Şimşek. While the photographs placed in their hands reveal that it was Sinan who attacked Tahir, Şimşek’s proposal makes everything even more complicated. In exchange for Melek’s freedom, Doğan must leave Istanbul within three days. This decision, made under the shadow of family secrets and past sins, forces Doğan to confront both his brother and his own conscience. On the other hand, Çağla is shaken by the truth she learns about her father's death. The fact that Sinan's name is mentioned in both the attack on Tahir and a murder from years ago upsets the balance within the family. In the mansion, while Tahir opening his eyes creates hope, the severe seizure he suffers takes everyone's breath away. As Doğan tries to bring his father back to life, Sinan is cornered, and the confrontation between the two brothers progresses to the point where guns are drawn.

The news of Melek's suicide attempt devastates everyone. Doğan, startled by the sound of a gunshot in the warehouse, manages to save Sinan, but a domino he finds on the ground leads him to Çağla. Melek's survival in the hospital brings a sigh of relief to the family. However, Melek's imprisonment and the revelation that Genco is behind it ignite a new tension. Doğan pushes the limits to protect his sister; his confrontation with Genco leads to an irreversible rift between the two sides. Meanwhile, Behram's true identity and past conflicts begin to surface. Sinan's great love from years ago and its tragic end shed new light on today's animosities.

The crisis that erupts at the iftar dinner in Hancıoğlu Mansion completely disrupts the balance of the evening. Mahinur's sudden cry, after years of silence, shakes both the family and their past. As Doğan struggles to bring Mahinur back to life, Çağla experiences a mixture of hope and fear as she hears her sister's voice for the first time. Meanwhile, Behram takes action to get Mahinur out of the mansion. But the real storm breaks out when Doğan and Çağla confront each other at the place where Yusuf Usta died. They speak the truth that has been hidden for years. Tahir is Yusuf's killer, and Doğan witnessed everything that night. Tormented by guilt, Doğan says he's ready to pay the price; for Çağla, nothing will ever be the same again.

Mahinur's arrest on charges of attacking Tahir Hancıoğlu turns both Çağla's and Doğan's lives upside down. Çağla, doing everything she can to defend her sister, feels helpless in the face of Mahinur's silence; Doğan reveals a shocking truth in court, exposing Tahir's role in Mahinur's father's death years ago. This revelation triggers a major crisis in the Hancıoğlu family. As Mahinur is sent to prison, Behram's anger grows, and the reckoning between him and Çağla becomes even harsher. Doğan, meanwhile, stands by Çağla's side both to save Mahinur and to pursue the crimes that were covered up in the past. However, this step taken by Doğan upends the balances in the yalı and leads to an irreparable rift within the family. On the other hand, while Mahinur's arrest paves the way for Melek's release, Lamia's dark plan devised in prison heralds a new danger.

Doğan races against time to get his severely injured brother Sinan to the hospital, and despite the doctors giving up hope, he succeeds in bringing him back to life with one final effort. However, Sinan’s condition remains critical. Although the person who planted the bomb appears to have surrendered, Doğan believes this is all a setup and turns his suspicions directly toward Yılmaz. After a heated confrontation between the two, Yılmaz openly declares his loyalty to Tahir, while Doğan remains determined to uncover the true culprits behind the attack. Meanwhile, a major secret is being kept at the mansion. Tahir has actually awakened from his coma but doesn’t want anyone to know. Fearing that the secrets in the black box and past sins will come to light, Tahir continues to pull the strings from behind the scenes. Amidst all this chaos, Doğan and Çağla are forced to both seek justice and hold on to each other.

Doğan and Çağla realize they’ve entered an irreversible war when they notice the dirty alliance set up against them. The power alliance between Tahir and Behram is not just a threat; it’s a harbinger of a grand reckoning stretching from the past to the present. While Doğan wants to take action for the sake of justice, Çağla stops him; because this war will now be won with reason, not anger. As the duo decides to dismantle Tahir’s order from the inside, the risk grows ever larger. Meanwhile, Behram also tightens the screws on Tahir through Mahinur; while preparing to shift the balance of the game with the aces up his sleeve, on the other side, Melek struggles to break free from the burdens of the past and acts with the desire to build a new life. Just when it seems all the pieces are falling into place, a major fracture occurs. Tahir’s move that surprises everyone becomes the one that ignites the real battle for Çağla.

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