Yao Guang, the best intern under Yuelao, came to earth to complete his internship task, but was assigned a "hell difficulty" client: Gu Beichen, the materialistic criminal police captain who specializes in breaking feudal superstition. The romantic encounter she created with fairy magic was ruthlessly exposed by him using probability; she caused the peach blossoms in the police station to bloom out of season, and he reported it as a "new genetically modified plant research project." In a ridiculous confrontation and an unresolved case that they jointly investigated, the two went from the confrontation of "fairy vs. Science" to a mutual understanding and affection called "destined".
