Loosely based on Agatha Christie's 1939 whodunit "And Then There Were None", the film follows ten strangers in an isolated hotel, who are temporarily cut off from the rest of the world, and are mysteriously killed off one by one. Several events which take place in the hours before the characters' arrival are introduced at key moments in the film using reverse chronology structure, and in a parallel story, a murderer awaits a verdict at a crucial trial that will determine whether he will be executed for his crimes.