Jiang Xiaobai, who has just graduated, rents an old apartment building and discovers that something is not right with his neighbors - the eldest sister in 302 sings and the flowers bloom out of season, the uncle in 504 has a golden light when he trades in stocks, and the coworker in 601 next door is afraid of the otaku who stays around day and night and never turns on the lights.
During a power outage, Jiang Xiaobai discovers the truth through the crack in the door of 601: these neighbors are all mythical beasts who have descended to earth to experience life, and the socially fearful otaku is actually an ancient candle dragon. From then on, Jiang Xiaobai was forced to act as a "community steward", teaching the Spring God to order takeout on his mobile phone, helping Zhulong deal with the pursuit of the "Eternal Night" organization, and leading retired generals, the Spring God and other mythical beast neighbors to stage a battle to defend the mythical beasts in a world filled with fireworks and laughter.