The lost LiNa-mi smartphone falls into the wrong hands. The attacker arranges everything so that the girl comes to pick up the phone at his service center and hands over the unlock code — he installs a spyware program on the device, and now he can monitor every step of his victim. Meanwhile, in the countryside, the bodies of several girls are found, and a police detective begins to suspect that his son, who ran away from home several years ago, is connected to these murders.