While Doha, a yoga instructor, lives a quiet married life with Yassin, the emergence of the dopamine app puts her in front of doubts and questions about her actual feelings, especially since this application is tasked with finding a true partner.

When Zaidan and Shaima approach their love story with marriage, things take an unexpected turn due to the application of dopamine. Meanwhile, software engineer Dawood is living a strange experience that may change his life forever.

Within Dopamine app, a new love story begins between Yahya and Taleen, and Zaidan gets closer to Duha, while Dawood suffers from a problem with his partner.

Duha moves forward with her friendship with Zaidan after she trusts him, and Yahya and Taleen's relationship becomes more complicated. Meanwhile, the Dopamin app is undergoing new updates.

Duha receives mysterious messages that lead her to reveal great secrets, and the Dopamin app reaches Shaima to give her an unexpected surprise.

Duha and Shaima reach the truth about Zidane, and Yahya and Taleen's relationship gets into difficult challenges. Later, Dopamine App appears to hide bad intentions.

Dopamin App is now very popular with users, but it may not seem like that. Yahya and Taleen reach a crossroads in their relationship. Later, Doha receive a visit from an unexpected person.

Doha confronts Zaidan, who met an old friend that had turned his life upside down. Meanwhile, Yahya and Talin go through a new phase.

As Doha tries to move on with her personal and professional life, Dopamin tries to stop her, meanwhile Dawoos's manipulation of his app's users takes him to a new level as he tries to find answers that satisfy him. Later, Yahya and Talin face an unexpected surprise.

After the disappearing of Yahya, Taleen tries to reach him. Yassin and Shema's relationship becomes threatened due to a strange situation. Later Doha and Zidane have doubts about the intentions of Dopamin App.

Doha enters the world of digital applications and there she meets an unexpected person. Meanwhile, Sarah and Yahya must carry out the tasks assigned to them by Dopamin.

To find answers to his questions, Yassin is forced into a tough confrontation, Zidan discovers a secret about Sarah, and Duha is about to fall into the abyss because of her continuous investigations about the application.

Duha finds out a lot about the app after meetings and interviews, and finds out who invents Dopamin. Later, Doha receives a mysterious message, and her goal is to know the truth before it is too late.

Zaidan and Doha finally meets the mastermind of Dopamine, and the facts unfold and put them before difficult choices. Later, Talin gets into big trouble.

In the final episode of Dubabin, some relationships may fall apart, others may win, and everyone will find answers to their questions.