When Amp, the four-inch tall lead scout from the alien planet Erde, devises a plan to alert his commanders to call off the pending invasion of Earth, he decides to use parts from Zack and Olivia's old walkie-talkies to build a quantum radio.
Unfortunately, his plans go awry, and instead of contacting Erdian Central Command, he accidentally alerts the whole town that's an alien in their backyard.
Now it's up to Zack and Olivia to save their alien friend from being discovered and save the planet from an invasion panic.
