Perfectamundo isn't so perfect anymore - the trash is out of control! A giant garbage heap threatens to break through the cybersite's dome, and the CyberSquad must become garbologists in order to reduce the rubbish. Hacker, meanwhile, is digging through the very same heap for some mistakenly discarded seeds that will allow him to grow an army of monster plants to take over Cyberspace. Will he find the seeds before the Perfectamundians solve their trash problem? Or is the dome doomed?