Gu Nan works the night shift at a 24-hour convenience store. No one knows that he is a wizard with a thousand-year heritage. He uses magic to cook oden (with the addition of moongrass), uses spells to keep bento boxes fresh (the drawing is a "preservation spell"), and can even use tarot cards to predict customers' fortunes - of course, all for free. Until one rainy night, a woman in a black trench coat came in to buy beer. Her shadow was like a twisted snake. Gu Nan discovered that she was a "dark wizard" who specialized in stealing human beings' "energy of hope". In order to protect the regular customers of the convenience store (postgraduate entrance examination students, white-collar workers working overtime, stray cats), Gu Nan had to use the most primitive magic: arranging coins from the cash register, using snacks on the shelves as spells, and staged a "fireworks magic war" in the modern city...
