Experienced New York Police Detective John Harris is sent to London to help a local task force investigate a series of gangster killings organized by a new player in town, an American. With the help of a young teen wronged by gangsters, Harris navigates London's seedy, drug-fuelled underworld in order to take down its new criminal empire.

Five young people apply to live in an isolated house together for six months whilst their every move is filmed by numerous cameras.