Jason Shepherd awakens in hospital in an amnesiac state. Discovering that he is a police detective he tries to solve the mystery of how he came to lose his memory and uncovers some shocking truths.

Chloe Keane is an stressed American fashion model living in London who is about to have the worst weekend of her life. She and her boyfriend are invited to attend a party at the house of a former rock-star named Stan and his weird family who live in the countryside. Chloe awakes the next morning only to find her boyfriend has abandoned her at Stan's house and she has been drugged and handcuffed to the bed.

Five years after their summer together in Barcelona, Xavier, William, Wendy, Martine and Isabelle reunite.