After a whirlwind, fairytale romance, Abigail Baskin marries freshly-minted Silicon Valley millionaire Bruce Lamb. For their honeymoon, he whisks her away to an exclusive retreat at a friend's resort off the Maine coast on Heart Pond Island. But once there, Abigail's perfect new life threatens to crash down around her as she recognises one of their fellow guests as the good looking, charismatic stranger who weeks earlier had seduced her at her own Bachelorette party...