The story is written in the first-person narrative from the points of view of the four main characters, Martin, Maureen, Jess and JJ. These four strangers happen to meet on the roof of a high building called Toppers' House in London on New Year's Eve, each with the intent of committing suicide. Their plans for death in solitude are ruined when they meet. The novel recounts their misadventures as they decide to come down from the roof alive – however temporarily that may be.