At the beginning of the story, Jang Ho-jae (played by Park Seo-joon) wakes up from a nightmare and faces a real-life challenge: he and president Yong Gil-ge (played by Hui Jun-suk) received a mission to capture monkeys, but accidentally stumbled into a bloody murder scene..When the police station was forced to investigate the bizarre death of the deceased Oh Ki-hoon, Hao-jae realized that his identity and survival were involved in a larger conspiracy.