When Rev and Lexi tamper with Tech’s X3000 Automated Weapon System mistakening it for a video game, Melvin the Martian comes to Acmetropolis to destroy it after his spacecraft was hit by a missile from Tech’s invention. When Melvin threatens to shrink the planet, Lexi admits she tampered with Tech’s invention and Melvin orders that Lexi be handed over to him in 24 Hours. Can the Loonatics find a way to thwart Melvin before Acmetropolis becomes the only planetary location to be ”hard to find on any map.”