One is Long Jun, a kid from a rich family, and the other is an ordinary citizen, Rumei. By chance, they were assigned to the same class and desk in junior high school. Rumei's parents divorced, and she was raised by her cousin since she was a child. Now her cousin is studying abroad. , Only Lumi lives at home alone. Her childhood was very sad, but she is very strong. Long Jun is handsome and a playboy, but his studies are not very good, so he was left by the teacher until evening. What kind of events will happen between the two of them?