When her date lets her down, Lena meets Daniel and there’s an instant connection, especially when she learns that he’s kept the keys to all the places he’s ever lived. Lena doesn’t want to go home. She wants to use Daniel’s keys to go on the ultimate property porn tour of London, a lost weekend of getting to know each other intimately in other people’s homes. But what begins as a risky fantasy soon becomes a deadly threat. From tiny apartments to riverside penthouses, "7 Keys" is a wild ride through the hidden side of London, the dark underbelly of a modern city where young people struggle to find their place - and sometimes struggle to survive.