Set in Blackpool, Lancashire, Molly Chapman, a mother of three, finds her once-loving marriage falling apart. Struggling with her mental health and neurodivergence, she seeks support from her psychiatrist.

To escape her troubled home life, Molly walks her puppy along the beach, where she encounters a handsome stranger.

One night, after another fight with her husband, Molly contemplates taking her own life but falls from the sea wall under mysterious circumstances.

Injured and in a coma, Molly wakes up with no memory of her life and a stranger by her bedside.