Wallykazam! (2014)

S01E17 A Tiny Problem

Libby Light Sprite stumbles upon a magical "Flower that Shrinks You," and in a twist of fate, Wally and Norville unintentionally shrink themselves. While navigating their new, tiny world, they meet a Whittle named Wendy, who offers to guide them on a quest to locate "the Berry that restores your size."