At a secluded lakeside resort, biologist Zhang Cheng comes to find his ex-wife, Yan Tong, and is astonished to see her looking youthful again. He learns that she has been using a secret beauty product and discovers that strange disappearances of guests frequently occur at the hotel.
During the Republican China, a series of murders happened in Beihai City. Finding that all the victims were professional magicians, the police detective Long Cong turns to the real magician for help.