In the middle of ToonVille, where all cartoons live, sits the ToonMart, where all cartoons hang out. Marty works at the ToonMart, which he likes to think was named for him. It was not, even if some people do call him ToonMart Marty!
When Marty's hat is stolen by Hobo Jeb, everyone thinks Hobo Jeb is Marty! Holly and Marty have to get the toons to look past the superficial. And when that doesn't work, well, he has to steal his hat and identity back.
S2E10 22 min