A group of strangers awaken to find themselves placed in a giant cube. Each one of them is gifted with a special skill and they must work together to escape an endless maze of deadly traps.
An impromptu goodbye party for Professor John Oldman becomes a mysterious interrogation after the retiring scholar reveals to his colleagues he has a longer and stranger past than they can imagine.
Events over the course of one traumatic night in Paris unfold in reverse-chronological order as the beautiful Alex is brutally raped and beaten by a stranger in an underpass tunnel.