Zuhal Erdem, a personal development expert at the peak of her career, looks like a modern urban woman, but she is a completely different person in her home with her three sisters and father. Unable to go outside the order and rules established by her father Çetin because of the oath she took, Zuhal once again faces her loneliness while watching her sister Aslı's wedding preparations. Meanwhile, she is unaware that the person who crosses her path by chance will change her life. Zuhal, whose fate constantly intersects with Tayfun, tries to resist her feelings. While Tayfun tries to understand Zuhal's resistance, an unexpected tragedy will reveal the truth behind Zuhal's vow to her father.

Zuhal, who could not be with Begum in her most difficult moment, is shaken by a great sense of guilt. Zuhal, who believes that she does not deserve happiness due to the accusations coming from her father Çetin, turns down love once again. In the meantime, Aslı's wedding day has arrived. However, a sudden news completely changes the course of the wedding. An unexpected helping hand reaches out to the Erdem brothers. Although Tayfun tries to act distant in the face of Zuhal's unstable behavior, the fact that the two are constantly side by side does not escape the brothers' attention. Çetin, who is unaware of what is going on in Zuhal's heart, will be tested by his daughters one by one.

Shaken by what he sees, Çetin begins to make the world difficult for his daughter. He horrifies everyone with the punishment he imposes on Zuhal during a routine cemetery visit. While the Erdem family is struggling with various crises, Begüm, whose foot is still in a cast, complains about not being given enough attention. While she continues to have a hard time at school, someone who comes to her defense will finally make Begüm smile. Struggling with Alp's threats, Aslı is torn between filing a complaint and hiding what happened to her. While Zuhal advises Alp not to bow down, Figen, who thinks about her father's well-being before her siblings, discourages Aslı. However, Alp's unexpected move forces Aslı to make a decisive decision. When the curtain of the past is lifted, it becomes clear that Zuhal is not the only one struggling with Çetin's ruthlessness. Zuhal will surprise everyone, especially her father, with the courage given by her first love.

Çetin does his best to discourage his daughter against Zuhal's decisions. However, Çetin's test with his eldest daughter, who also uses Figen on this path, will not end. A familiar face receives a session from Zuhal. Zuhal, unaware of her new client's intentions, gets through the difficult days thanks to Tayfun. However, while Zuhal finds peace in Tayfun, she is unaware that her lover has a completely different meaning for others. What happened to Bora opens a new page between him and Aslı. However, after what Aslı learns, their relationship will reach an irreversible dead end. Nihan, who learns what her son is hiding from her, ignores the advice of everyone around her. His increasingly fueled anger will push him to make an unexpected move. Zuhal, who repaired the courage broken by her father with Tayfun, trusts her love more and more day by day. When Zuhal discovers that her loneliness is affecting the whole family, she will make an offer that will change everyone's agenda.

Zuhal's upright stance, who is about to change her life, collapses in the face of her father. Shaken by the news he received, Çetin imposes heavy penalties. Meanwhile, Zuhal, who is taking care of her estranged siblings, cannot find the opportunity to experience her own enthusiasm. Begüm, who is happy again thanks to the attention she receives from Baran, will find herself in a dead end when she succumbs to her ambition. Figen, who cannot keep a secret from her husband despite all her promises, makes a big mistake. Asli will be the one who pays the price for her mistake. While Nihan continues to go to places where she is not invited, she is unaware that her nightmare is at the end of her last stop. Tayfun, who is used to Nihan's harassment, is knocked on the door by an unexpected guest this time. While she is looking for the lost test results, she is unaware that Alp is also after her. Discovering this, Çetin's big move will result in many heartbreaks.