Kirby doesn't have anyone his size to play with; whenever he plays with Tuff and his friends, he always ends up getting pushed around. Tiff thinks that her family should go to Gengu's toy store to buy Kirby a toy he can play with. Conveniently, Gengu has a brand new toy in stock! He doesn't know how it got in his shop, but Tiff thinks it will be a perfect playmate for Kirby. It's a robot dog! Once the robotic runt is up and running, it's always in the mood to play with Kirby. It's like Kirby's new little brother! Kirby sometimes finds his puppy to be annoying, but he knows he still loves his new playmate. It might not be long until Kirby and his friend are separated, though, as Tiff discovers just where this mysterious toy came from...