On Jenny Sanderson's eight birthday, Mr. Sanderson decides to get her a small robot named Chibi-Robo. Mrs. Sanderson, his wife, is mad at him since they are in massive debt from the original robot from the same company named Citrusoft, Giga-Robo. This Chibi-Robo will soon meet all of the toys in the Sanderson house, most notably Drake Redcrest, the Free Rangers, Plankbeard and Sunshine, the teddy bear that belongs to Jenny.