After the Tardy Boys find out that their parents have been kidnapped by space aliens, they also discover that they have a cat. When paying for the undernourished kitty starts to impede their ability to feed themselves, the Tardy Boys enter Skinny Kitty in a contest to win a year's worth of food. Also entered in the contest is Cat Spy Scratchy from the Planet Hiss in the Feline Galaxy, who has begun to use Alien Space Mind Control to take over people's minds. Leyton Tardy is immune to the mind control, and he uses Barton Slugg's gym sock toe-cheese to save all of mankind.