Tian Tian, the single mother of a five-year-old daughter, kills a drug dealer and is then pursued for vengeance. The only person she can turn to for help is her female cousin, Fang Di.

While surveying city streets for a digital-mapping company, engineer Qiuming catches sight of Lifen, a beautiful young woman. Immediately smitten, he follows her to a street that doesn’t appear on any map or even a GPS.

In a small seaside town, two schoolgirls are assaulted by a middle-aged man in a motel. Mia, a teenager who was working on reception that night, is the only witness. For fear of losing her job, she says nothing. Meanwhile, 12-year-old Wen, one of the victims, finds that her troubles have only just begun. Trapped in a world that offers them no safety, Mia and Wen will have to find their own way out.