This is a story about two girls who were born in the 1990s and are transitioning from girls to adults: Liangqin's tutor Fang Yuan, who she has admired since she was thirteen years old, unexpectedly married her sister. In anger, she ran away from home but indirectly killed her best friend, a child... After she dropped out of school, she took on the responsibility Taking up the task of taking care of her pregnant sister, Liangqin, who had decided to give up on Fangyuan, rekindled her love for him. However, she accidentally discovered her sister's affair at this time, so in the name of love, she launched a crazy revenge on her sister for Fangyuan... Mijia has lacked father's love since she was a child, and her mother Mi Jia, whose dear friend Gao Meiying has always been lukewarm to her and who received no care, once went astray and was sent to a juvenile detention center, where she left behind tragic memories and became full of despair about life... Tang Yan, her stepfather's son and her nominal brother, opened her heart step by step. But the withdrawn Tang Yan makes Mi Jia feel elusive. Coupled with their embarrassing identities, the relationship between the two slowly develops in uneasiness and suspicion... Just when Mi Jia realizes the importance of Tang Yan to herself, her stepfather learns about their relationship and decides to send Tang Yan to the United States...