讲述了少女卜涵鹿（吴芊盈饰）一直相信自己拯救过世界，坚信姐姐被外星人掳走，为了救回姐姐一直孤单承受着周边人的误解，直到校霸林千与（刘家祎饰）与一群朋友们的出现，才让她的生活不再孤独，也终究找到属于自己的男主角，谱写青春新…

yle="padding: 0px; margin-top: 0px; margin-bottom: 0px; display: inline-block;">大学生徐可可学习太拼，心梗猝死，被路过的陆臻人工呼吸救活，徐可可手背上出现了三天倒计时。在倒计时结束之前，必须再次和陆臻接吻方可续命，徐可可…

After spending their first year and experiencing a series of silly events in high school, several energetic high school freshmen with different personalities realized why they should work hard.