Those years when I was young, thinly dressed, frank and frivolous have gradually faded away in the long river of time. In her second year after graduating from college, Mo Nan received a call from her high school class monitor, asking her to attend a class reunion. Memories came flooding back to her. An unexpected incident that year caused Mo Nan to go to the far south alone for the exam, and she had no contact with her former classmates and friends for six years. Mo Nan was hesitant about whether to attend the party. When finally at the class reunion, Mo Nan reunited with Chen Ziliang, the teacher he had always liked. When they got together again, without the worries of identity, Mo Nan's heart was still the same as before. At this time, Mo Nan also reunited with her former good sisters Xu Yao and Fang Jiyu. Chu Zhisheng, who has always liked Mo Nan, once again pursues Mo Nan passionately, but Shen Yi, who has been chasing behind Chu Zhisheng, where should he go?