Nick Jr. TV Guide

Mayor Humdinger steals a jukebox so he can play an annoying song all day long; a hungry eagle causes Mayor Goodway's tightrope walking lesson to go awry.

Mayor Goodway thinks she can change the Ruff-Ruff pack's naughty ways by pretending to be a bad biker and becoming part of their gang.

When supervillain Ms. Goo Goo starts changing everyone into babies, it's up to Guppy Girl and Bubble Boy to stop her before they get turned into babies too.

Oona's friend breaks a bone in a tricycle accident and requires medical attention; the Guppies perform a song called, "If I Didn't Have My Bones."

Nonny and the rest of the Bubble Guppies meet a duck that obstructs the path of a marching band and learn some valuable lessons about cooperation.