The male protagonist and the female protagonist met in a physical education class, and they became good friends. After getting along for a long time, they both fell in love with each other. The female protagonist, who was a top student, took the male protagonist, who was a bad student, to study together. The two worked hard together and were admitted to the university of their dreams, and became role models among campus couples. After four years in different places at university, they worked smoothly and got married happily.