s1e6 Enter the Super Weapon! The Last Battle for Earth!
December 3, 2006
Penny and Billy work together to find the hidden location of Element X and launch a last-ditch effort to destroy the alien planet???s navigation system.
When a bullet train powered by a revolutionary G-Reaction engine vanishes in flash of blinding, rainbow light, boy geniuses Billy Kimura and Penny Carter race to uncover the secrets behind a deadly alien invasion!