On a small island off the windswept Irish coast, distinguished guests arrive for the wedding of the year between successful businesswoman Jules Keegan and charming TV star Will Slater.

As the champagne flows abundantly and the revelry begins, old differences and hidden jealousies emerge and intertwine strangely with nostalgic memories and wishes for a blissful life, dangerously disrupting the festive, joyful atmosphere.

Shortly after the cake is cut, the screams of a terrified waitress, who has just witnessed a gruesome sight, will turn the beautiful evening into a night of horror. And a storm unleashing its full fury on the small island traps the guests.

Everyone has a secret. Many have a motive. And one will not leave the island alive…