Ruff and Reddy help Dr. Gizmo to protect his valuable Chickasaurus egg from some thieves.

Killer and Diller in mummy guises swipe the Chickasaurus egg, wrapping Ruff and Reddy in their mummy wrappings.

Gizmo, Ruff and Reddy pursue Killer and Diller, but the Chickosaurus egg tumbles out of their truck and towards our heroes.

The Chickasaurus falls down a cliff and cracks. When Ruff, Reddy and Dr. Gizmo reach the egg, it begins to hatch.

The Chickasaurus has only managed to partially hatch from the egg. When it does hatch Killer and Diller arrive.

As Killer and Diller try to take the Chickasaurus away, but Ruff, Reddy and Dr. Gizmo get tangled with the running Chickasaurus.

As the Chickasaurus becomes airborne, Killer and Diller follow by helicopter all the way to a secret prehistoric jungle.

After a Brontosaurus blows Killer and Diller away, Ruff and Reddy try to flee from the jungle but they run towards a T-Rex.

Ruff, Reddy and Dr. Gizmo take shelter in a cave from a T-Rex. In the darkness they see a pair of eyes.

Ruff, Reddy and Dr. Gizmo are met by a cave boy called Ubble-Ubble, who knocks out the T-Rex. Killer and Diller kidnap Ubble-Ubble.

Ubble-Ubble bats Killer and Diller but they recapture him and Ruff, Reddy and Dr. Gizmo are confronted by a sabre-toothed tiger.

Ubble-Ubble lands in the chickasaurus nest where the chickasaurus is nursing a pair of eggs.

Killer and Diller try to steal the chickasaurus eggs but are flattened by Reddy. Ubble-Ubble joins the team back home (where Gizmo has presumably adopted him) and becomes a little league baseball sensation.

At the Grand Canyon, Ruff and Reddy hear of rumors of a pint-sized pony and as to the validity of their existence. Harry Scary hears of the rumors as well.

Harry Scary sends Reddy on his out-of-control donkey Poco Loco, who disappears in a burrow.

Ruff and Reddy make their way through the burrow where they see Poco Loco has made friends with a pony no bigger than Reddy's hand.

Harry Scary tracks the Pee-Wee Pony's hoofprints, and Pee-Wee leads Harry on a chase.

Harry lassos Pee-Wee but the pint-sized pony refuses to give up.

Pee-Wee escapes Harry's clutches and hides out in Reddy's hat. Poco Loco gives it to Harry "in the end."

Harry Scary tries to hold our heroes at gunpoint in exchange for Pee-Wee, but Poco Loco steals Harry's gun. As Pee-Wee heads back home, Harry lies in wait for him.

Harry Scary captures Pee-Wee in a sack. Pee-Wee's mother runs to alert Poco Loco, Ruff and Reddy.

Harry Scary escapes with Pee-Wee in a motorboat, pursued closely by Ruff and Reddy.

Harry takes Pee-Wee to his carnival, where he plans to get rich off using the pint-size pony as an attraction.

As our heroes head for Harry Scary's carnival, Pee-Wee goes through indignities as a performer in Harry's show.

Pee-Wee is locked in a strongbox as Ruff, Reddy and Poco Loco infiltrate the carnival.

Disguised as clowns, Ruff and Reddy rescue Pee-Wee, while Poco-Loco sends Scary into orbit with a good donkey kick.

Thinking they've subdued a burglar in the house, Ruff and Reddy discover a strange little man.

The visitor is a leprechaun, who filches Reddy's gold watch. How can he and Ruff explain this to the police?

The leprechaun tells our heroes of the Goon of Glocca Morra, a greedy being who has taken their princess for ransom and just keeps all the gold.

The leprechaun takes Ruff and Reddy to Ireland where the princess is being held captive at Banshee Castle.

Reddy's climb to the castle ends in a moat, leaving our heroes to alternate means of entering.

Ruff is slingshot into the castle where he goes missing. The leprechaun shrinks Reddy to his size as the pair venture to the castle.

The leprechaun and Reddy go across the moat and into the castle where Reddy is chased by the Goon's cat.

Reddy finds Ruff locked in a cell, then has to get by the cat in order to get to the cell key, held by the Goon.

Reddy sets eyes on the Goon of Glocca Morra as he makes a bid for the cell key.

Reddy frees Ruff from his cell and together they flee from the Goon.

Ruff hides in a turret, and the Goon plans to blast him out with a cannon in which Reddy is hiding.

Ruff and Reddy search the Goon's treasure room for the princess.

Reddy clobbers the Goon with a gold piece and with Ruff discovers the princess had been imprisoned in the Goon's hat. Reddy is returned to normal size while the Goon is shrunk and made a playtoy for his own cat.

With help from Ruff and Reddy, Professor Gizmo plans to launch a rocket to the moon. However, things go wrong when Reddy launches it prematurely.

As the rocket's third stage engages its parachute, it falls to earth and is blown by upper level winds off course.

The capsule lands in a frozen diorama. Meanwhile, Captain Greedy and Saltwater Daffy track the capsule, full of valuable instruments, in their submarine.

Ruff, Reddy, Gizmo and the Viking child, Olaf, make it to the capsule, but Olaf wants to go back out and fight the bear.

Olaf summons his pet falcon to ward off the bear, who turns tail and runs away.

While Ruff, Gizmo and Olaf search for food, Captain Greedy and Saltwater Daffy surface.

Olaf calls upon his falcon again when Captain Greedy and Saltwater Daffy hold Ruff and Professor Gizmo hostage.

Captain Greedy forces Gizmo to take him to the capsule, in which Reddy is sound asleep.

Olaf launches an offensive on Greedy and Daffy while Olaf's falcon alerts Reddy.

Reddy clobbers Saltwater Daffy, but Greedy, smelling something rotten in Denmark, sends Gizmo in to get clobbered as well.

Olaf gets hold of Captain Greedy's gun, and it goes haywire. Once it becomes loose, a battle for it ensues, ending with Greedy holding Reddy at gunpoint.

Greedy confiscates Gizmo's capsule equipment, but Olaf gets the drop on him with a horde of Vikings.