Yu Xiaoxiao, who had excellent grades but ordinary appearance, successfully passed the high school entrance examination and entered Jiangshi No. 1 Middle School. However, under the "training" of Fu Chi, a military training instructor with a sinister tongue and a pleasure in torturing people, attachment became more and more uncontrollable. Yu Xiaoxiao, who said goodbye to her instructor after school started, thought she was heartbroken, met Xu Zhen, her brother-in-law's son who had returned from the United States, and started a "twisted" cohabitation life. At the same time, the instructor Fu Chi returns to Yu Xiaoxiao's world as a physical education teacher... (I'll make up my own mind later (*/ω＼*) which may be a bit erotic (๑•̀ㅂ•́)و✧)