This is a story related to youth. In college, four good brothers, Tao, Yuan, Jie and Yi, slept in the same room, grew up together, and each welcomed their own love. But their love is bright and yet sad.
When Zhang Tao fell in love with a divorced teacher in school, he was criticized; when Wang Yuan faced the death of his beloved girl twice, his heart was broken; when Li Jie saw the cousin he had liked since childhood again, ripples started again; when Zhao Yi faced a long-distance relationship, and his lover broke up heartlessly, where should their story go? How should they face the changes in their family?