This is a true story. The story begins when a college student enters school. On his first day at school, he meets his childhood sweetheart-like elementary school classmate whom he has not seen for many years. Then he gets to know three roommates with very different personalities, as well as the considerate female college classmate. All kinds of ordinary and extraordinary stories happen between them. This article mainly tells about a college student's college life and emotional entanglements, as well as the unknown secrets behind them.