Seaweed Superhero - Nick and Sally are cleaning up the backyard when they come across a yucky apple core. Who's going to pick it up? The Cat in the Hat takes them to meet the best cleaner-upper there is, Sandy the Sand Hopper! Sandy teaches them the difference between natural "garbage" and man-made trash, and how some animals use the natural garbage as food. Back at home, they put the trash in a garbage bag, and the apple core in the garden for Wriggles the worm to enjoy! Itty Bitty Water - Nick and Sally are about to dump out the water in their kiddie pool when The Cat stops them - water is too precious to waste even a drop! Off they go to the Drippety Dry Desert to meet three creatures who are experts at conserving water. Back at home, they think of other ways to use the water in the pool instead of just dumping it out - like giving Cat a bath!