When Gu Nan met Mu Qingcheng, she thought she had met true love, but she never thought that she had been abandoned by Mu Qingcheng for four years. After Mu Qingcheng returned to China, he wanted to ask for Gu Nan's forgiveness, but he didn't know that Gu Nan was no longer the silly boy who let him bully him. After Xiao Ran died, Gu Nan began to understand that the person she loved most was not Mu Qingcheng...