When Cosmo's new "pet" is accidentally set free, the town of Dimmsdale descends into chaos. Only Dimmsdale's greatest heroes can stop the infection's spread, but can they buy Timmy enough time to find Cosmo and Wanda to set things right?

When Vicky banishes Timmy to his room, he and his fairy godparents decide to take a day trip into outer space. They soon stumble upon what seems to be an abandoned space station. But as they explore its corridors, they soon discover they are not alone...