回到17岁的高中校园，凉夏和茅亮带着对方的不满，重新面对着校园生活，却发现已经格格不入。凉夏的“百无禁忌”和茅亮的“成人思维”，也让两人频频闹出笑话，弄得鸡飞狗跳。在饱经啼笑皆非的矛盾对抗后，两人决心改变身边人的命运，帮每个人找到积极的人生方向。

Back to the 17-year-old high school campus, Liang Xia and Mao Liang were 28 and after facing a discussion they found themselves again 10 years back, thus facing again the life on campus out of the blue. Liang Xia wanted to live as an adolescent "no worries" and Mao Liang's "adult thinking", but even so the two frequently made happy moments. In the struggle after the ridiculous contradiction, they were determined tochange the fate of people around to help everyone find a positive direction in life. This is a school life romance drama with full of comedic scenes...