The play is adapted from the classic IP "She is Seriously Ill" by Zhu Ji. Unlike ordinary secret love stories, this play tells a story of a group of youthful, delicate and soft youth. In the autumn of 2012, Jiangyi Yucai Middle School welcomed a group of freshmen. Before that, the straight-shooting girl Su Zaizai (played by Zhang Miaoyi) met the cold and aloof school bully Zhang Lurang (played by Zhou Yiran) on a rainy day and fell in love with him at first sight. The girl rushed into Zhang Lurang's originally quiet life. It also slowly opened his somewhat closed heart. The immature first love story also slowly happened under the witness of his partners. And the happy enemies Gu Ran (played by Bian Tianyang) and Jiang Jia (played by Jiang Zhinan) are also interesting and fun, showing a different youthful vitality in the "chicken flying and dog jumping" and awkward care. Zhang Lurang, Su Zaizai, Gu Ran, Jiang Jia, Guan Fang (played by Guo Zhe) and the five people are also gradually getting close every day of their youth, growing up and experiencing together, and their friendship is gradually deepening, becoming the most important memory of each other's youth.