Clare (Teresa Palmer), a young Australian backpacking (travel), is exploring Berlin when she meets a local man named Andi (Max Riemelt) and has a one-night stand with him. The next morning, however, she finds that he has locked her in his apartment. Clare believes Andi when he says he accidentally forgot to leave her a key, and she stays with him another night. Soon, however, Clare realises Andi has no intention of ever letting her go, discovering that he has written the word '''' (mine) on her shoulder and stolen her SIM card from her phone. Clare tries to escape by smashing the windows but discovers they are double paned. To her amazement, when Andi comes home, he acts like nothing is wrong, offering her flowers and pesto. She attacks him but he physically restrains her, then keeps her tied up.