Seemingly badtempered basketball captain Huo Ran and the rumoured “King of Fighting” Kou Chen once faced off against each other on the basketball court. Unexpectedly, they were both put into the same humanities class at the beginning of their second year of high school. The tension was thick the first day they met, but was broken by an accidentally collapsed floorboard. After that, they made a bet to go exploring in the school “haunted building”, beginning a new and exciting school life in a series of unexpected happenings.