Lin Yi, an ordinary boy, unexpectedly became roommates with Su Qing, the school belle. From their first encounter in military training to mutual help in daily studies, to the emotional twists and turns caused by misunderstanding, they finally solved the misunderstanding and gained pure love. The story is interspersed with interesting things on campus such as giving lectures to make up lessons, helping to send love letters, and the protagonist's growth and transformation amidst misunderstandings. It is full of youthfulness and sweet romance.