Li Luoluo, who had just entered college, accidentally bumped into Jiang Gusen, a sophomore who was skateboarding, at the entrance of the school. The two happened to be assigned to the same class. They got together by accident. Soon, because Jiang Gusen knew that they were biological brothers and sisters, they separated. After returning from studying abroad, Li Luoluo saw Jiang Gusen and his girlfriend together at home. She knew that there was no possibility for the two of them, and the two did not get together in the end...
Concept: Two people who love each other will not be able to be together for some reason.