George rescues an injured mouse and sets about nursing it back to health. With all of his attention going to the new arrival, Junior starts to feel left out.

Inspired by their favorite space-hero cartoon, George and Junior search the house for heroic deeds to perform. George finds a real mission when a baby bird falls from its nest, and he teams up with new neighbor Becky to get it home past a hungry cat.

An army of ants threatens to attack the family's picnic and George tries to stop them by himself.

The insects from George and Becky's science project escape.

When Aunt Eunice is left to babysit George and Junior, George sets out to prove he can do all the things a regular ten year old boy can do - but not without various mishaps.

George searches the pond for a toy that was lost 70 years ago.

After a huge snowfall, everyone is having fun but a disappointed Becky, who has the measles and won't be able to make her annual snowman from the first snowfall. George decides to make one for her, but risks being lost in a terrible blizzard.

After the Zoopercar goes missing, George tells the story of how he made it with his father.

George must venture into the drain pipes to find a ring he was helping his father hide.

The Shrinks family spends the day at the beach.

George is shooting a monster movie for his parents' arts fundraiser, but Junior makes a hopeless monster. When a mysterious hairy creature from beyond the back fence snatches Becky's treasured doll, George sets out to rescue it and find a new star.

After a sleepover of pizza and scary movies with Becky, George wakes in the night to find a spaceship in the backyard, apparently drawn by the eerie sound of Harold's newest musical invention. His parents blame a bad dream, leaving George to face the visitors alone.