Xiao Yi, male, captain of the Criminal Police Brigade of City A, adheres to the spirit of the May Fourth Movement: promoting science and opposing superstition.
Lin Xin, male, is a magician at a fortune-telling stall in City A. Firmly scolded a certain captain: Bah, do you dare to say that you are not obsessed with me?
The captain and the little magician join forces to solve the case and uncover the crime.