An Zhi is a freshman who has just started college. Naturally frail and often ill, she injures her leg during military training and takes temporary leave to recover at home. In the first week after being discharged from the hospital, two strange little winged fairies suddenly whisk her away to the roof of an office building, where she is inexplicably drawn into a battle and even emerges victorious. What she doesn't know is that her opponent was none other than Zhao Qingzhe, the arrogant son of the Demon King, the story's villainous boss. Having just entered the human world to take on humanity, the Demon King's son suffers an early defeat. But instead of seeking revenge on An Zhi, he becomes her sidekick, and together they fight both monsters and humans.
