The Festival of Dirt is coming to the village of Filthingham, prompting Mayor Austin Stinkypants to hide Tyrone, Tasha and Uniqua's soap -- and their only hope of scrubbing up lies with spirited penguin Pablo, alias Robin Hood the Clean. This installment of the colorful animated series (with characters courtesy of children's book author and illustrator Dan Yaccarino) headlines a collection of four imaginative episodes.