On an empty street, two constables on patrol are discussing about a heart-snatching demon who has appeared recently while they pass by a wanted notice. It is said that the murderer leaves no trace behind, and he's always wearing black with a mask on. Right then, a dark shadow flashes by, and in the blink of an eye, one of the constables loses his heart. The masked man in black has appeared. When the other constable is in imminent danger, a skilled swordsman, Yang Yu Xuan, from the Eastern Depot reaches him on time with his men and rescues him, and he is sent to Tian He Medical Center. (Source: Viu)