The anime follows a young boy named Randy, whose dog, Chacha, died in an accident and was reincarnated as a living toy car. Each episode is presented like a chapter in a storybook, where Randy learns a valuable life lesson alongside his cartoonish and goofy friend, Chacha. Randy befriends several neighbors, such as Catherine, a tall blonde girl in red knee-high socks who rides a bicycle, or Mary, a short-tempered brunette girl dressed as a maid who carries a mop.