真幌站前有个多田便利轩，由老板多田（瑛太 饰）和他曾经的初中同学，现在赖在他家的食客行天（松田龙平 饰）共同经营。业务范围多样，只要二人认为价格合适，自己做得来，就接受。看似不靠谱的便利店，生意倒是不少。也因此结识了形形色色的人和事，或无厘头，或温情。而经历的那些事更是有的无聊，有的危险。二人开着小破车穿梭在各处，大叫无聊好累这个钱不赚了，却还是身体力行的完成了任务，在与各色人物结识的过程中，刷新了二人对许多事的认识，也影响了彼此的轨迹……
电影版《多田便利屋》以电视剧的形式再次归来，改编自三浦紫苑得同名小说。

Hiroto Miyama is a poor lawyer who takes on criminal cases, but unable to make money. He pursues the truth for the 0.1% out of Japan's 99.9% conviction rate. One day, Hiroto is scouted by Haruhiko Madarame. Haruhiko Madarame is the head of Madarame Law Firm which is one of the biggest law firms among the 4 big law firms. Hiroto Miyama begins to work with Atsuhiro Sada. Atsuhiro Sada is a lawyer specializing in civil cases and makes lots of money for the law firm. He doesn't have any interest in criminal cases which can not make money.