Catnap loves his kittens more than anything in the world, even more than his Smiling Critter family. When they are taken in the middle of the night, he stops at nothing to track down the culprit.

When Frowny Fox is thrown into the garage chute, he discovers a whole new group of animals... The Forgotten Critters. They were once normal Smiling Critters before the evil CEO cast them away. Now ...