The Critters return to earth on a covert mission to recover one of their own with one rule: No eating! Meanwhile, teenage Christopher feels the pangs of unrequited love.
The police investigate a pet massacre at a local animal shelter, and Chris gets into a fight with Dana's boyfriend. The Crites'' search leads them to Chris's mom, and they begin to disobey their one rule...
A grounded Chris and his best friend Charlie sneak out to attend Dana's party - and so do the Critters! Over in Australia, the Bounty Hunters hone in on their target.
Chris and Charlie struggle to make the cops believe that they saw "furry balls with teeth." Veronica's delivery guy hookup, Holt, shows his true colors as they fend off a full-on Critter attack.
The kids suffer through detention under sadistic Principal Weber (played by Tom Lennon) while Holt and Veronica race to save them from the pending Critter attack.
Chris faces a hard choice- leave with the Critters forever or go back to Earth. But when the Bounty Hunters threaten his friends, he realizes he must rally the Critters and return to earth to rescue them.
