Storyline:The Australian Clare (Teresa Palmer) is on vacation as a backpacker in Berlin, where she meets the equally nice and charming English teacher Andi (Max Riemelt). Sparks fly between them and they arrange to go on a sightseeing trip through the city, which ends in a hot flirt. But after a romantic night, there is an unpleasant awakening for Clare: Andi is not lying next to her. At first, the young woman thinks her last night lover left without saying goodbye, but quickly realizes that the truth is even more unpleasant: Andi has locked her up in the apartment and he's not going to kill her let go again. For Clare, this is the beginning of a nerve-racking horror trip. Welcome to Berlin!