Yan Zhiyu, a social-phobic and autistic ordinary college student at a university in city A, was living a life of stagnant college every day until she coincidentally became close friends with an aloof girl.
However, just when she thought everything was slowly getting better, her best friend suddenly left without saying goodbye and disappeared completely.
In the process of searching for his missing friends, Yan Zhiyu stepped into the whirlpool of memories again and again, hoping to find clues in the memories, but found that things seemed to have been wrong from the beginning.
Concept: There are cracks in everything, that's where the light comes in.