choi eun-sue (played by kim so hyun)'s parents became victims of a murder of a bad nature. although choi eun-sue lucky enough to escape from the murderer's butcher's knife, he was hit by a car and lost his memory. aaa。 choi wuke (played by park yoo-chim) is a small patrolman, whose fate and coincidence closely link the two together. wu chulin (played by shin se-kyung) woke up from a coma and was shocked to find that she had gained the special ability to see the smell of "injustice", which made wu chulin feel very uneasy. in an accident, wu chulin knocked down cui wuke who was on the mission. then, cui wuke, who was quick-witted, saved wu chulin from the brink of death. with her special abilities, wu chulin and cui wuke cooperated to successfully arrest the robber cui wuke wanted to pursue, and the wheel of fate between her and cui wuke also began to spin. there is a close connection between her past, his past, two seemingly unrelated memories.