The Backyardigans (2004)

S03E17 The Masked Retriever

Uniqua, the librarian, embarks on an adventure with her horse Toronado to track down Don Austin, who has some overdue library books that Tasha is eager to borrow. As she navigates through Don Austin's territory, she must find a way to retrieve the books while outsmarting his guards, Pablo and Tyrone. Will she succeed in her quest for Tasha?