Zha, a top student with a high IQ, goes on a journey with Mo, a professional debt collector and sometimes hooligan, in order to face down her own neurosis, as well as cure Mo of his extreme insomnia.

The game company designer Yuan Dabao is a single father, and his son Yuan Xiaobao has a very different personality. This contrast makes the feelings of the father and son of the two people often "smothered." In an accident, the two were exchanged by the mysterious magician.