School Building 5

Zhang Qingran, Chu Mo, Fang Ranjie, and Gao Xixin were involved in a diary out of curiosity. They saw many unknown things, diaries, secret passages, ghosts, countless rules, mazes that could not be solved, doors that were closed by themselves... Four girls with different personalities were forced to grow up in such an environment, and they also got a glimpse of unknown secrets.