The Wacky Racers roar across the desert towards Handsprings, Wyoming. Dick Dastardly takes a sneaky shortcut to the lead, then builds a missile to sabotage the others, but Muttley lights the fuse prematurely, blowing themselves up and creating a large chasm. Professor Pat Pending uses his "Do-It-Yourself Canyon-Crosser" to build a bridge and the other racers use it too. The Slag Brothers arrive too late and The Bouldermobile crashes down and becomes a pile of rubble, but they beat it back into shape with their clubs and race off.
Chief Crazy Buffalo spots Dastardly approaching and goes to stop him from bringing smog to his land. The Army Surplus Special leads the others using bazooka power. The Creepy Coupe blows a tire, but uses a snake as a spare. With no room to pass, the Professor changes The Convert-a-Car to a drill and tunnels underground, until he hits a boulder.
The Chief stops The Mean Machine with a wire across the road. Dastardly warns him of the approaching "iron wagons" and when he moves to stop them, Dastardly takes off. The Chief threatens the others with his bow and arrow, but they run right over him.
Vying for the lead, The Buzzwagon cuts The Bulletproof Bomb in half. The Ant Hill Mob zip their car back together and continue. Dastardly and Muttley erect a fake railroad crossing to stall the others, but a train runs him over. The Chief arrives in a tepee on wheels and ties the do-badders to a cactus, but The Gruesome Twosome run over him again and he runs away. Muttley picks up the cactus and Dastardly and runs.
The Gruesome Twosome use dragon power to keep the Professor from passing, but he cools them off with a freeze ray. While they're tussling, The Arkansas Chug-a-Bug uses barefoot bear power to pass them both. A dense fog confuses the racers, but an infrared photo finish shows the still-frozen Creepy Coupe slid across the finish line first.
- The Gruesome Twosome
- The Slag Brothers
- Lazy Luke and Blubber Bear
- Rufus Ruffcut
- The Army Surplus Special
- Penelope Pitstop
- The Red Max
- The Convert-a-Car
- The Turbo Terrific
- The Bulletproof Bomb
- Dastardly and Muttley
- When the dragon begins breathing fire at Pat Pending, his head is sticking out the left window. When it switches to a wider shot, his head is sticking out the rear window. As the camera zooms in on Pat, the stream of fire never stops, but when it widens again, the dragon's head is sticking out the left window again, where it is frozen in a block of ice. As the ice slides across the finish line, his head is sticking out the right window, then in the photo finish, it is sticking out the rear window again.