Looking for the Devil

Feifei's father is a policeman, and she hasn't seen him at home all day long. Feifei's heart has changed qualitatively. She wants her father to find her a mother. There are two female colleagues in the police force, both of whom admire Feifei's father. However, Feifei's father likes a passerby, and the passerby is a dangerous person. Is this the person she caught, or his significant other!