On the 108th day of waiting at the alley entrance, Jiang Xia finally got Lin Xu's firm answer: "Don't wait for me anymore." After both his parents died, Lin Xu moved in with Jiang Xia's family, but kept her at arm's length. He worked to pay off his debts and studied late into the night, turning himself into an island. He believed that someone as broken as he was didn't deserve someone as whole as Jiang Xia.
At university, they ended up in different cities. Jiang Xia met Shen You'an, a wealthy, sunny, outgoing senior in the music department. His arrival stirred an unprecedented sense of crisis in Lin Xu, and made him realize for the first time that pushing someone away wasn't the same as protecting them, and that self-abasement wasn't nobility.
When Gu Xiaoxiao came into Lin Xu's life and Shen You'an began pursuing Jiang Xia, the four of them searched for the meaning of love in the maze of youth. This is a long-overdue awakening and a healing that goes both ways. The childhood friends' love can weather the storm and wait for the rainbow.