26-year-old Shogo Washio sense danger from the expansion of Asian superpower nation Ouran. Shogo Washio teams up with Kenzo Nakagishi and establishes a new political party. He loses in the elections to gain a seat in the house of representatives. A few years later Japan is now invaded by the country of Ouran and falls under the military occupation of that country. Basic freedoms like speech and religion are lost, while protestors are killed. In this environment, Shogo Washio joins the underground resistance organization ROLE.

江户时期深川蛤町。某年夏天，一个年轻的旅者来至此地。这个名叫永吉（内野圣阳 饰）在京都学习豆腐制作，为了磨练技艺而四处云游。深川蛤町长屋的井水清凉甘美，令永吉赞赏不已，他遂决定在此地开一家豆腐店。永吉的勤劳爽朗打动了木桶店姑娘阿文（中谷美纪 饰）的芳心，他们两情相悦，结为夫妇。专营的夫妻店“京屋”也随后开张。 创业之初总有诸多不顺，虽然永吉的豆腐味美价廉，但江户人不习惯京都的做法，因此京屋的生意迟迟不见起色。即便如此，夫妇俩也从不气馁，为了做出普罗大众所喜欢的豆腐不断努力。直到某一天…… 本片根据山本一力的小说改编。