Kim Byong-gook, a seemingly family man and section chief, shocks his colleagues by slaughtering his entire family and then vanishing. Detective Jong-hoon is tasked with solving the case, but his colleagues seem uncooperative, except for one person: Lee Mi-rae. As Jong-hoon reviews CCTV footage, he discovers Kim entering the building but never leaving, leading him to believe Kim must be hiding inside. The discovery sends the building's workers into a state of fear, and they are proven right when they discover Kim's true intentions.
Office
A team in Seoul is consumed by mystery and tragedy as they delve into the shocking case of a sales manager who brutally murdered his family, uncovering a tangled web of darkness and despair.
