Victor and Valerie Valiant raise a kitten in their house. They become aware of the mysterious power in his tail. He's fast and wild when he teases the scared cats in the Valiants Cat Shelter. An older cat in the shelter calms Nitro Weepot down by telling him stories of the outside world. The older house cat tells Nitro Weepot what his mystery powered tail is for and how to use it to rescue lost cats. The old shelter cat also tells Nitro Weepot that there are bad and scary things in the desert. What is it? Will it go after Nitro Weepot? Will his strange array of friends help him?