现年25岁的古川美知留（户田惠梨香 饰）是长崎一家书店的职员，她自幼从未离开家乡，过着波澜不惊的生活，虽然与上林珠宝店的公子久太郎（柄本佑 饰）即将成婚，却与来自东京的某出版社销售部主任丰增一树（新井浩文 饰）发展不伦关系。送丰增回京之日，美知留临时起意随之同赴东京。她的任性在老家引起一阵骚动，而错过返程航班促使美知留用一个又一个谎言维系现状。在东京盘桓期间，她借住青梅竹马家中竹井辉夫（高良健吾 饰）家中。当得知离开长崎前偶然买的彩票高中2亿日元大奖时，这个对世态几乎没有任何了解的女孩终于要面对人生最大的转变…… 本片根据佐藤正午的原作《身の上話》改编。

In this offbeat coming-of-age tale, a charming, rebellious high school dropout named Kanta befriends the kind, provincial Shoji. The two bring out the best in each other, each gaining confidence from their friendship - especially regarding pursuit of the opposite sex. The working class Kanta becomes a sort of unruly anti-hero, maintaining his pride, defiance, and self-assurance even as his prospects seem increasingly grim.