Judo GYM curator lost his wife due to an accident and then he focused on his daughter. The dedicated policeman with integrity and the curator both dislike each other. During an investigation, the policeman accidently got injured with his spirit freed from his body. Then they worked together to solve the cases....

According to the report, a large number of guns have been smuggled into Korea and a new agent, Yoo Da-hee is sent there. Although she had met a "top" agent from the NIS who offered help, his on-site investigation was very flawed and the two started to argue. However, those they have met in order to find clues were all killed and they suddenly became suspects. Facing the uncontrollable crisis, they overcome the difficulties together....