The Battersea Bats are a gang of four kids who have their den in an abandoned building near the Thames, and they have a plan of action in mind because in about a week there is a soapbox derby being held, a contest they mean to win.

Young tween Justin Yoder, who’s known for his outgoing demeanor and wit despite being confined to a wheelchair, dreams to be like his athletic older brother and propels himself into the world of soapbox derby racing. It’s a field he’s sure he has a chance in. Unfortunately, he finds that because of his condition, not everyone is eager to see him compete.