The game is based on a thriller novel by the same name, and tells a story about a group of friends who open a ghostly rift on an island, which leads to the discovery of its dark history.

The player plays as Alex, a bright and rebellious teenager who brings her new stepbrother Jonas to an overnight party on an old military island. The party takes a terrifying turn when you open a ghostly gate, which leads to the discovery of a strange island and its dark history.

The game is a first-person narrative game, with the player controlling Alex and making decisions that affect her relationships, as well as the story and the characters.