On the way to a race the gang veers off to visit Debbie's Aunt Belle, a cattle rancher. The mysterious beefinger and his henchman have rustled up her entire herd. Speed Buggy and the gang rescue the cattle and try to drive them to the market.

Dr. Kluge is upset with his latest invention and gets an idea to get Speed Buggy and make slave cars. He tells the gang he'll pay 3 million dollars and they reject him. After that the Kluge decides to play dirty, while the gang is sleeping he kidnaps Speed Buggy. Will the gang find Speedy in time before Kluge uses his new invention?

Speed Buggy entered a race when a mysterious shaped zeppelin makes the Speed Buggy and the other cars go wacky, Speed Buggy and the gang trace the zeppelin to ""The Chief." Can Speed Buggy capture "The Chief" and get the Taggerts trophy?

Speed Buggy wins a trip to go to race in Bulgonia. Baron Vulch plants a bug in the trunk. Vulch lets out Mata Cari, whom Speed Buggy falls in love with. Will the gang find Speed Buggy before that race and before Vulch and his sidekick captures him?

While riding on a plane the vehicle gets engine trouble. Speed Buggy and his friends arrive in a jungle which is close to Kingzilla a giant ape who leaders the other apes. Kingzilla and Speed Buggy get along and Professor Grovak realizes this is way to getting close to the other apes. Speedy is the bait and the gang becomes hostage. Will they get out of the jungle in peace?

The villainous Professor Snow and Madame Ice create automobiles for ice in order to travel. After learning about Speed Buggy, they attempt to control Tinker in order to take over the world.

Speed Buggy and crew help Professor Rigby, who is being attacked by his former colleague, Professor Rishna, after discovering an invisibility solution. Rishna uses it to kidnap Debbie and Mark while Tinker and Speed Buggy come to their rescue.

The menacing Gold Fever manages to steal gold from around the world, even Speed Buggy's prized racing trophy. In order to stop his continued thefts and rescue Debbie after being kidnapped, Mark and Tinker travel to Hawaii to end his plans.

Traveling aboard a cruise ship, the crew falls overboard and ends up on an island infested by large plants that were modified by Dr. Meangreen. In order to control the universe, Meangreen attempts to steal Speed Buggy's remote control device.

The crew visits Pleasure Island to enter the Bayou 500 racing competition. During the race, they find a ringmaster who plans to control all of the nearby animals in order to rule the world.

At a race in the United States and Mexico, the crew encounters Jerick who is able to grow and multiply due to a powerful potion that Jerick's former friend created. However, the former friend places the potion's recipe on a tape that Jerick steals, so he asks Speed Buggy to retrieve the tape and save the day.

Crazy scientists Varzak and Emil create a laser device that has the ability to take over the universe. In order to safely hide the device from the authorities, they plan to steal Speed Buggy and escape through a jungle.

In an oil reserve in Oklahoma, the crew encounters Dr. Vesuvio who is collecting large quantities of oil in order to rule the world. However, they discover that Vesuvio has been illegally hoarding the oil in order to accomplish the feat.

While in the Himalayas, Speed Buggy visits the Hidden Valley of Amazonia where the women use the men for slaves. Queen Sheba pressures Debbie into turning Mark and Tinker into slaves. In order to stop her plans, Speed Buggy and Debbie attempt to overthrow Queen Sheba.

Captain Schemo plans to use his private collection of submarines in order to take over the oceans and the world. The crew stumbles upon Captain Scheemo's underwater stash and attempts to stop him before he controls the entire universe.