After her father's sudden death, Layan Al Salem returns to her small coastal hometown, determined to quickly liquidate his estate. But her plans are upended when she discovers an old library owned by her late father, where she meets Youssef El Beheiry, a mysterious young man with a troubled past.

As Layan spends more time in the library, she discovers a series of old letters hidden in rare books—love letters between her father and a woman named Mariam, who she presumed had died when she was a child. These letters reveal long-buried secrets about her father's past, his lost love, and the choices he made to protect Layan from the truth.

As Layan delves deeper into the mystery of Mariam's identity, she finds herself growing closer to Youssef, a man who bears his emotional scars. Together, they begin to unravel the tangled threads of their past, but their journey forces them to confront their wounds and fears of love and loss.

Ultimately, Layan must decide whether to return to her old life in the city or follow the new path she discovers in her father's library. The story is about healing, forgiveness, and the power of love to change the lives of the most unlikely people.