A shocking kidnapping case takes place in Thailand. In-Nam (Hwang Jung-Min) just completed his last murder for hire contract as an assassin. He is aware that the kidnapping case is related to him. In-Nam heads to Thailand. There, he meets his helper Yoo-Yi (Park Jung-Min) and they work on the kidnapping case. Meanwhile, Ray (Lee Jung-Jae) learns that his sibling was assassinated by In-Nam. To take revenge on In-Nam, he heads to Thailand.