It's Green Fest and Greenville's power is going green thanks to a new wind turbine. Megablast has been asked to play at its grand opening event where they'll be performing a new song about caring for our planet. But when Riley gets interviewed by a videographer, she suddenly gets tongue-tied. It looks like she might not be able to perform! Then Metal Mike crashes the party and really threatens to derail things by taking over the stage with his sound-polluting, air-polluting music. Megablast transforms into Rocket, Thunder and Metallix to save the day, and Theo and Alex help Riley get over being tongue-tied.