In this a-MEOW-zing musical show, Gabby unboxes a special acorn that needs the magical touch of a rainbow to grow. But when CatRat causes a color cat-astrophe and breaks the rainbow, Gabby and the Gabby Cats must find the colors again to set things right. Gabby, Pandy Paws and friends travel to the Cat-O-Sphere, Mermaid-Lantis and some favorite Dollhouse locations in search of the colors that will make rebuilding the rainbow, possible.