Li Tian is an extremely ordinary girl. She has a stubborn personality and a little sense of humor. She has a crush on her junior high school classmate Qiao Fei, but it seems that fate is playing a joke. Her high school teacher is actually Qiao Fei's aunt! Thinking of the serious face of her class teacher, she realized that Qiao Fei was actually a good student who would not fall in love prematurely, so she hid her love in her heart and prepared to confess her love to him after the college entrance examination. However, just when Li Tian was about to confess after taking the exam, she traveled through time and space and was still in a time and space where history did not exist! In this time and space, many things happened. Where should she go? Can she come back?