Nature Cat

When Hal's favorite squeaky toy Mr. Chewinsky gets lost from the dog and toy anniversary party, Nature Cat and the rest of his team find reinforcements, in Nature Dog and Houston's cousin Sputnik from Russia, to retrieve him and remove trash from the ocean along the way to save it and its inhabitants.

Nature Cat, having realized his and other cats' favorite toys have gone missing, goes on a mission to retrieve them from Bad Dog Bart. Along the way, they meet a tough pirate named One Eared Winnie, who also is trying to find the treasure. Fortunately, One Eared Winnie later turns out to be Nature Cat's long lost sister, Gwendolyn, who he reunites with.

In the series finale, Nature Cat and his pals realize they've come to the end of their Nature Curiosity List. Meanwhile, Sir. Galahad gives himself the title of King and moves into a barren castle and steals pieces of nature to make his castle look more beautiful.

After coming out victorious against The Soil, Water and Plant Stealers, The Nature-tastic Four feel nature-tastic, and ready for a well-earned afternoon of fun and relaxation. Well, all but Nature Cat. He feels like he didn't help Plant Bunny, Water Mouse and Rock Dog out during their "battle" with The Stealers. He begins to doubt himself because he doesn't have the powers the others have. Has he ever really helped out the Nature-tastic Four?! Meanwhile, an outer space creature from the Planet Twylo named Sandos has come down to Earth with one thing on her devious mind, to steal the power sources from the Nature-tastic Four. She wants the power of Plant Bunny, Rock Dog and Water Mouse for herself. What about Nature Cat's power? Nah! He has no power! Or so Sandos thinks. But when the others lose their power and nature needs defending, only one will rise to the occasion and come through! Nature Cat!