Ryuichiro's bride, company president Mayumi Kitahara dies, leaving him to take care of her daughter Natsumi. Natsumi moves into Ryuichiro's flat, but he sets to work to be the father she never had.

Kentaro lives in the suburbs with his two little brothers. They are poor, but they are happy. The factory Kentaro works for, though, goes bankrupt on pay day and Kentaro finds himself out of a job and with even less money. The brothers are thrown out of their apartment and Kentaro, a born optimistic until then, decides that he must aggressively pursue "money". This drama depicts the success story of Kentaro in his search for money and a better life.