Poyraz, who is determined to propose to Haziran after getting Aliye's consent, has an unforgettable marriage proposal plan in mind. While İdil is devastated by Batu leaving the island, Latif is afraid that İdil will follow Batu and ruin her life. While Alper and Melisa's wedding preparations continue, this big decision they make about their lives will be tested by the plans their families have made for them. While Alper and Melisa's wedding is pregnant with many surprises on Kırlangıç Island, Zeynep's secret to İdil is a harbinger of hard days waiting for Zeynep.

The baby that Haziran and Poyraz unexpectedly find at the hotel becomes the new talk of Kırlangıç Island. While everyone is rallying around the baby, especially Haziran and Poyraz, the efforts to find the baby's mother begin on Kırlangıç Island. While Selma and Fatih are looking for ways to meet Nehir's school in England, Latif will devote himself to Zeynep and her illness with İdil's departure. While Alper and Melisa start to have problems from the first day of their marriage, Biricik is faced with the face of Beyazıt that he has never seen before. The arrival of Sadik's older sister Suzan and her son Okan to the island will herald Sadik's difficult days.

The disappearance of the baby during the turmoil in the hotel worries everyone, while Haziran and Poyraz go after Hanife and her baby. As Nehir starts to get closer to Okan, Suzan continues to be a threat to Sadik. While Biricik is disturbed by Beyazıt's jealousy, Beyazıt will take lessons from Görkem to become the person Biricik wants. While some difficulties are waiting for Alper and Melisa couple from the first days of marriage, a helping hand will come from Selma and Fatih couple. Zeynep, on the other hand, does not want her illness to be known, but nothing goes as she expects.

The rush and preparations of the Kırlangıç Island Marathon surround the whole island. Görkem puts Sadık in a difficult preparation process while he is determined to race Sadık in the marathon. While the mysterious journalist Hasan, who came to the island for the marathon, is a great threat to Selma, this journalist will cause Nehir to make radical decisions in her life. Couples Haziran and Poyraz & Melisa and Alper start a race about how well they know each other. While Biricik and Beyazıt are facing a new problem in their relationship, the decision of Haziran and Poyraz will surprise everyone.

Haziran and Poyraz's decision to get married is about to become a reality. Despite all the obstacles they face, the duo, who do not give up on each other, has one last problem to overcome before getting married. While the news that Haziran and Poyraz are moving to Istanbul spreads rapidly on Kırllang Island, Sadık finds a way to deal with his older sister Suzan. When Nehir learns that Hasan is her father, she distances herself from everyone, and years later, meeting her father will completely change the young girl's life. While Selma continues to worry about her daughter, Fatih confronts Hasan. A brand new era will begin in the lives of Alper and Melisa.