Carl, an anthropomorphic super truck, protects Car City by transforming into different vehicles using his ST3000 gadget. He helps inhabitants facing troubles, solving problems with courage and perseverance.

In this action/adventure series taking place in the Car City universe, a town built for anthropomorphic-vehicles that live happily together, the fearless Super Truck always stands ready to come to the rescue. Meet Carl the Super Truck, a superhero dedicated to protecting the town of Car City. Always ready to jump in and rescue a fellow inhabitant in trouble, he has the ability to transform into any type of vehicle. From Super Fire Truck to Super Boat, and with the help of his super-gadget the ST3000, Carl can solve any problem. Whether he's transforming into a boat to chase off sharks, a garbage truck to clean the canal, or a helicopter to look for lost presents, he is fully equipped to respond to any distress call. Full of resources, Carl shows younger ones that with courage and perseverance, they can solve any problem. Each episode, an inhabitant will run into trouble. Carl will transform into a new vehicle to help him out, but will always need to use his ST3000 to fully solve the problem.