Like all butterflies, Flappy starts life as a caterpillar. Crawling onto Bingo and Lila’s backyard waterslide one sunny afternoon, Flappy finds himself in mortal danger. Lucky for him, Flappy’s in the company of two self-proclaimed “Bug Inspectors” (and not Lila’s Grandma); so she’s rescued before she can be flattened by a big blue guy barreling his way. 

After turning into a beautiful blue butterfly, Flappy hitches a ride in Bobo, much to Bingo’s delight (and Muffin’s dismay); and manages to change the course of Heeler history when she leads the girls to a very special sign…