On the eve of graduation, he was drunk and singing. Xiyi, who returned home late, climbed over the wall to return to her dormitory. When she jumped off the wall, she traveled through time and space. Even if we firmly believe in the concept of time and space of the theory of relativity, what we have come to is an imaginary history. How should a female college student who has not yet entered society survive in such a fantasy time and space full of intrigues? Are family ties, friendships, and love really as profound as in novels, or are they just a mirror image? The wisdom of future people is destined to write a legend here. . .