Moved by television shows of lawyers she saw as a child, Ryoko Ishida dreamt of nothing more than becoming one herself. Though she studied hard she was never able to realize her dream. Resigned to her fate, Ryoko later went on to work for a bank where she was put in charge of going after defaulted loans, the most detested job of them all at the bank. Told not to come back to the bank until she'd collected from at least one of the many deadbeat borrowers she was assigned to pursue, Ryoko reaches Kazuaki Yudo, a heavily indebted lawyer and the last person on her list. Operating out of a dilapidated home office, lawyer Kazuaki's work - when he gets any - mostly involves him serving as a court - appointed attorney to defendants unable to afford legal counsel. In other words, Kazuaki makes no money. But that is not why he's a lawyer. He and his newfound partner Ryoko share an intimate desire to protect the weak and defend the innocent.

因小时候受电视里有关律师的节目，石田良子（须藤理彩 饰演）的梦想成为一名律师。尽管她用功学习，却一直未能实现梦想，就职于一家银行工作，负责在银行里最费力不讨好的差事追讨拖欠的贷款。她一家一家去拜访，但一点成果也没有。这样的良子找上了有动和明（阿部宽 饰演），一直拖欠着事务所设立资金。这位有动律师的事务所又小又破烂不堪，而他主要接受的案子多为法院指定的付不出律师费的委托人进行辩护的国选辩护，换句话说，根本赚不到多少钱。然而，这不是他当律师的原因，保护弱者，维护正义才是真正目的。他在他的新助手良子的协助下，通过细致的调查，以雄辩的口才，缜密的推理在法庭中替嫌疑犯洗刷冤情。