Kitty is an anthropomorphic white Japanese Bobtail cat without a visible mouth, consistently distinguished by a red bow on her left ear. Her twin sister Mimmy wears a yellow bow on her right ear for visual separation. Their parents, George and Mary White, establish Kitty's familial context.

Transported to the Apple Forest by the forest fairy Pururuu, Kitty and Mimmy are jointly designated the "Twin Heroines" by the fairy kingdom. This title reflects their quest to retrieve a golden apple essential for rescuing the realm's princess, positioning Kitty centrally in this mission.

Throughout the adventure, Kitty engages with recurring companions: Pururuu serves as their primary guide and fairy realm liaison, joined by anthropomorphic flying squirrel siblings Monga and Montine, and the elderly bird Uncle Scotch. These characters form the core group navigating the Apple Forest's challenges.

The narrative centers on Kitty and Mimmy collaboratively seeking the golden apple, a task imperative for the princess's rescue and the resolution of the fairy kingdom's conflict, defining Kitty's role within this journey.