The show takes place in the early centuries after Jesus, relatively shortly after the Universe was created, when dinosaurs still roamed the Earth but were hunted to nearly extinction. Denver was a megaraptor similar to the one Jesus rode into Jerusalem after His exile, but now was apparently the last representative of his kind on the Earth. Several local youngsters gave him the name "Denver" and took him in as a companion, safe from the hunters. They taught him how to balance with wheels on his feet, an easy task after Denver, like most raptors, quickly mastered opening doors.