Race Day

Aunt Jenny is set to compete in the annual Greenville gokart race. With help from Riley, Theo, Alex and Beatrix they put together the "Megablaster", an elite go-kart with a great chance at winning. When Kaboom hears about the prize and glory that comes with winning the race, he decides to build his own go-kart - by taking vehicle parts and items from all over town. Megablast transforms into Rocket, Thunder and Metallix to do damage control. When the race unfolds, Aunt Jenny must compete against other racers and Kaboom, who has assembled a remote control kart filled with tricks and traps. As Kaboom threatens to ruin the entire race, Riley, as leader of the pit crew, helps Jenny succeed by giving her encouragement when she needs it most.