At multiple crime scenes where humans turn into demonic beings, the prime suspect caught on camera is the spitting image of the male lead. Armed with an underworld arrest warrant, the female lead detains him to face Heibai Wuchang’s judgment. Desperate to prove his innocence, the male lead blackmails the female lead into helping him seek the truth. As they dig deeper, they expose a chilling conspiracy behind the cases and the killer’s link to the male lead. What they don’t know is that every move they make is part of a mastermind’s design...