This is a story about love, friendship and youthful growth. It may be my youth in another world. Zhu Qianqian always thought that she and Mushaoer, beautiful and talented people, were destined to be together forever, but their love that was too hasty and too mature caused the two people to suffer a lot. Zhu Qianqian's best friend Ren Shenlan has been secretly in love with Lu Ting'an for several years without knowing it. One is a passionate, gentle and mysterious senior in the literary club, and the other is a silent and poisonous girl who is good at pretending to be stupid. If time could be turned back, Lu Ting'an said: "I thought I'd never met you." Lin Xiaoxu, Ren Shenlan's blue-faced confidant, played music in high school for three years. When he graduated, he wore a military uniform. His friends saw him off, but Jiang Yue didn't come. Everyone understood it tacitly and didn't ask any questions. Jiang Yue sat on the hospital bench, burying her head and sobbing silently. Is the love born out of regret true or false? When they broke up, Zhu Qianqian said, "Mushaoer, among the thousands of farewells, which one do you love the most?" "Be heartless, have no desires and no thoughts, Zhu Qianqian, let's not see each other again this time."