Nature Cat and the gang are off on a nature walk to a park. But, hold on, this park doesn’t have… a slide! Or monkey bars! Well what kind of park is this then? Wait a minute, they’re at the Grand Canyon! Is that even a park!? It sure is, it’s a national park. This canyon is incredible! But the gang wants to know how it got SO big and SO wide? Ah, that, my friends is the grand mystery of the Grand Canyon. To find out, they must head deeper into the canyon. Onward and deeperward! Creatures and critters, put your paws together for Harold Mole Hill's Strongest Show on Earth. That’s right, folks, it’s that time when all the animals battle gravity in a special showdown to lift their own weight. Wow, that’s a ton! But when an unsuspected champion takes the stage, the gang learns a whole lot about a new animal culture. As it turns out, some little critters have to carry a lot of weight to keep things running smoothly. Who knew?