Synopsis by Hal Erickson
The cats of Hamelin are sore about losing their rat-catching jobs to "Pied Piper" Porky, and file a grievance with the Supreme Cat. He disguises himself as an enormous rat in an effort to prove that Porky isn't doing his job. Anxious to earn his reward money, Porky dedicates himself to ridding Hamelin of this garguantuan rodent, who adds insult to injury by stealing the cash. The cartoon's best running gag is the duel of insults between Porky and the ersatz "rat" ("Eh, your sister smokes corn silk!", "Eh, your sister drives a pickle wagon!", and on into the fadeout).