A poor college student, Kazumi Koyama (Shun Oguri)'s priorities are friendship and to make everyone happy. He never says no when people rely on him. With his strong ally, the consumer finance ATM, he buys dinner and takes on other people's debts despite his poverty, while unopened bills are piled up at his door every day.

When optimistic Kazumi finally gets an employment offer for a real job, he meets a policeman Shuzo Hikita (Norito Yajima) and an office clerk Mimi Nakahara(Yu Yamada) who works at the consumer finance company. Kazumi finds out from Mimi, that his debt now amounts to a million yen, and that his job offer could be ruined because of his debt.

Both Shuzo and Mimi are in debt to a host club/bar owner/money loaner OmOm. He is actually the boss of the two gofers who defraud Kazumi of 200000 yen. Kazumi visits OmOm with Mimi and Shuzo to get his money back, only to put himself into OmOm’s money game with various challenges. Can Kazumi make the impossible possible with his optimism?

小栗旬饰演轻松挑战冒失又乐天的的贫穷大学生--小山一美,因为他永远不会说「不」的性格令他拥有许多的朋友. 可是那些所谓朋友却只是想向他借钱.

贫穷的一美本着「朋友比金钱重要」的信念,即使自己没有钱也会向贷款公司借钱来帮助朋友.

现代社会的环境容易令人不断产生欲望, 而金钱正好是满足欲望的最佳工具. 虽然现今世代没有金钱便生存不了, 可是人生中不是应有比金钱更重要的东西吗? 像小山一美这种抱紧「朋友比金钱重要」信念的人, 在现今世代真是几乎绝迹了.

能被金钱满足的你也好, 不能被金钱满足的你也好, 请收看「只要有爱就成」的「贫穷男子」!