Martin Sharp (Pierce Brosnan) is contemplating suicide on New Year's Eve on the roof of the Toppers Building, high above London's streets. He is interrupted by a woman, Maureen (Toni Collette), who has the same fate in mind. She shyly offers to wait her turn, until two other strangers, a young woman named Jess (Imogen Poots) and a pizza deliverer called J.J. (Aaron Paul), also turn up.