After the neighborhood basketball court is vandalized, Ziggy and his friends decide to form a club called the Black Dinosaurs and build their clubhouse in Ziggy's backyard where they find a mysterious cache of buried bones.
Ziggy and the other members of the Black Dinosaurs go to Space Camp where they learn about the space program and speculate about the existence of extraterrestrial beings.
Ziggy and his friends are excited to find out about the tunnel under their school that was once used by the Underground Railroad and decide to check it out.
