After discovering she's inherited a remote island in Canada from the estranged grandfather she was never allowed to meet, 17-year-old Annie Jacobson decides to investigate, pulling her into a world of buried secrets, unexpected sisterhood, and the complicated family history she was never meant to find.

Mia is fleeing addiction and leaving behind a professional life in tatters in Scotland. She accepts a wedding invitation from her estranged sister in New Zealand – only to find the would-be-bride dead upon arrival. Caught up in grief and pulled by a dark attraction to her late-sister's fiancé Ewan, Mia soon finds that familiarity among a small community breeds secrets and tensions, endangering the brittle fabric of the town itself.