Marianne is eight years old when her mother goes missing.

Left behind with her baby brother and grieving father in a ramshackle house on the edge of a small village, she clings to the fragmented memories of her mother's love; the smell of fresh herbs, the games they played, and the songs and stories of her childhood.

As time passes, Marianne finds it difficult to adjust, fixated on her mother's disappearance and the secrets she's sure her father is keeping from her. Yet, in one of her mother's dusty old books, she discovers a medieval poem called Pearl, and, trusting in the promise of its consolation, it seems as if her life begins to parallel the poem's course.

But questions remain. Marianne is ever more tormented by the unmarked gravestone in the abandoned chapel and the tidal pull of the river, and as her childhood home begins to crumble, the past leads her down a path of self-destruction. Can Marianne ever come to understand her mother's choices? And will her own future as a mother help her find her peace?