Takuro owns an old robot Koyuki, which can neither cook well nor do things right. But, while living with Takuro, Koyuki starts to develop human feelings. At that time, the family of Takuro’s best friend had gone bankrupt and moved to the other side of the river. It was hell on earth, where only the extremely poor lived. Koyuki, who now has human emotions, sneaks into the area to save them.