Before leaving China to study abroad, Xiao Jun goes on a family trip to visit his grandparents after two years of separation. While everything seems to have surprisingly changed, Xiao Jun tries to reconnect with life around him and to finish the photography assignment about his family.

20世纪八十年代初，中国政府为了遏制日益增长的犯罪率不断打击犯罪。一次偶然的机会，刚上大学的小军因为跳舞结识了曾经的校园帮派领袖张建强，他的生活也因此开始改变……