Lixia and Cheng Qiqi (Chai Biyun) are childhood sweethearts who have been playing together since childhood and have a very good relationship with each other. Both of them were admitted to the famous Asakawa No. 1 Middle School, where the two girls met Fu Xiaosi (Chen Xuedong), Lu Zhiang (Bai Jingting) and Yu Jian (Xia Zitong). The five of them became friends and swayed the light and happiness of youth in the green and hazy campus. At the same time, tangled and complex emotions also grew secretly without knowing it. In a blink of an eye, the three years of carefree time came to an end. What awaits friends is a vast world full of opportunities and unknowns. Fu Xiaosi, who has always liked painting, became a famous cartoonist. While Cheng Qiqi was his assistant, he gradually won Fu Xiaosi's heart. In fact, Cheng Qiqi also loved Fu Xiaosi bitterly. Driven by jealousy, she embarked on a road of betrayal that could not be turned back.