本片是一部中国大陆喜剧片，上映于2016-12-09，由张末导演，由倪妮/霍建华/马苏主演。
剧情简介：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...
外文名：28岁未成年
别名：二十八岁未成年 / Suddenly Seventeen
类型：喜剧 / 爱情 / 奇幻
地区：中国大陆
导演：张末
编剧：张末 / 张弘毅 / 张影 / 翟嘟 / 田金
演员：倪妮 / 霍建华 / 马苏 / 王大陆 / 潘斌龙 / 隋凯 / 刘恩佳 / 余心恬 / 汪汐潮 / 来喜 / 曲哲明
