Xiao Nanzhu, an ordinary young man, returns to his hometown and accidentally inherits a magic book called "Qiankun Calendar" left by his grandmother and her former profession - calendar master. Through the Qiankun Calendar, calendar gods transformed from traditional festivals appear in front of him: New Year's Eve, Little New Year, Lantern Festival... To drive away evil spirits and protect the world, Xiao Nanzhu, as a calendar master, chooses to join hands with the calendar gods to fight against various evil spirits after learning about the harm of evil spirits to humans and his own responsibilities. In the process of fighting against evil spirits, it seems that a huge conspiracy gradually emerges, covering the entire world. Xiao Nanzhu discovers that the calendar god "New Year's Eve", who seems to have an unknown secret from the beginning...