Immediately following the untimely death of his best buddy, black market dealer Young-gyu makes the decision to put his past behind him and begin a new life with his long-term girlfriend Yu-ri. Because Yu-ri needs money to cover her father's medical expenses. Once again, in order to help her out, Young-gyu takes on the task himself. It operates out of an ocean-bound ship that travels between Korea and China, where it harvests organs from the victims of those who have been smuggled aboard. Meanwhile, Sang-ho and Chae-hee, a married pair, board Young-passenger gyu's boat and set out towards Weihai in mainland China. That nightfall, as the boat entered international seas, Chae-hee vanished without a trace and all of her photos and things vanished as well. Aboard the same ship, Young-gyu runs upon Yu-ri, who claims to be the only one who saw what happened the night Chae-hee vanished.