A week after having dinner with his girlfriend and her adult sister Hana, he gets an unexpected call: she missed the last train and wants to stay at his place. Before he can refuse, the doorbell rings. Slightly drunk and far too intimate, Hana lets her cleavage peek from the clothes he lends her. She admits she never told her sister she was coming and says nobody will find out. Every word and gesture feels like an invitation, leaving him only seconds from crossing the forbidden line.