Tang Tianying, who moved away with her family since she was a child, is lonely and introverted and not good at communicating with others. The boy born in the 1990s has a huge sense of alienation in his heart. After going through a series of unbearable pasts such as elementary school and junior high school, the conflicts with his family have become more and more serious. Until he entered college, the once taciturn boy gradually walked out of his closed world, and under the influence of friendship and love, he gradually completed his own sublimation. As a post-90s generation, the true growth history of the much-criticized generation.