Every night Jimmy pushes back his curtains to peer at the moon: "Clickity, Clack, Bonk Clickity, Clack, Bonk " But, ordinary moons aren't made out of cookie like this one. Jimmy imagines racecars, airplanes, trains--and even dragons reading in libraries--whooping it up on the moon. Everything is going smashingly well until the moon mysteriously disappears. He seeks help and understanding from his sister, and they become better friends and have more great times on the moon together.