
AJ is an 8-year-old techie who drives monster-truck Blaze, the top racer in Axle City. The two go on adventures that have them taking on problems involving science and math. Many predicaments they face are caused by Blaze's rival, Crusher, a tractor-trailer that will do anything to beat other vehicles to the finish line. The animated series is billed as the first TV show for preschoolers to comprehensively cover areas of science, technology, engineering and math. Each episode introduces different STEM concepts, including buoyancy and trajectory.

It's Halloween in Axle City and when Blaze and his little sister Sparkle hear about a magical Trick or Treat Treasure, they set out on a treasure hunt to find it.

The Great Egg Hunt begins, and Blaze and Crusher race all over town to see who can find the most eggs; only the first truck to collect 100 eggs will win the egg-ceptionally tasty chocolate trophy.

The Axle City toy store's amazing machine can make any toy one wants; when Crusher uses it to make massive toys that run amok, only Blaze and Watts can stop the giant toys from making a giant mess.

The Monster Machines are eager to see Darington's stunt track, but Crusher tricks Darington, sending him far away.