在20世纪80年代末,出生在海港小镇的青年横道世之介(高良健吾 饰)一脸懵懂地出现在东京街头。正如他那个有些奇怪的名字一样,世之介仿佛与现代化大都会有着天然的差距,不过这个天生乐观且迂直的大男孩很快融入到新生活之中。在喧闹的校园里,他最先与仓持(池松壮亮 饰)、阿久津唯(朝仓亚纪 饰)相识,又和藏有秘密的加藤雄介(绫野刚 饰)短暂交往,与纯真无邪的富家千金与谢野祥子(吉高由里子 饰)谱写了一段浪漫恋情,也似乎曾对有着丰富人生阅历的千春姐(伊藤步 饰)心怀好感。此去经年,这些人偶尔停下脚步,摹地便想起那个曾给他们的生命留下美好回忆的世之介,心中会涌起怎样的情感? 本片根据吉田修一的同名原作改编。The year is 1987 and Japan is just reaching the peak of its economic success. Eighteen-year old Yonosuke Yokomichi arrives in Tokyo from Nagasaki. Ordinary in every way possible, he lives in a suburb far from the excitement of the big city and commutes to a university in the center of Tokyo. During his first days at school, Yonosuke befriends Ippei Kuramochi and Yui Akutsu. Soon after, he joins the Samba club and spends his leisure time learning to dance. In the Samba club, Yonosuke meets Kato, who turns out to be gay. Together, they take a driving class where Yoko, a rich girl, shows interest in Yonosuke. But he hardly notices her advances; he is infatuated with party girl Chiharu, an older woman he met by chance. Parallel to the depiction of this year of ordinary college life, the characters are shown sixteen years later in the year 2003. However, missing from these scenes is Yonosuke, who is said to have become a cameraman after college. After learning of Yonosuke's death, Yoko receives an envelope from his mother. The photos in the envelope - with the words "For Yoko's eyes only" written on it - captured the beauty and the "miracle of chance" those untroubled days enjoyed.