In this episode, Mr. Filth and his mischievous minions are up to no good in their secret sewer hideout. Their plot involves a notorious attempt to persuade Beth, a particularly diligent young girl, to avoid washing her socks. Will Beth fall for Stinky’s nasty lies?

Mr. Filth is the ultimate mess-maker! He's on a mission to turn squeaky-clean kids into grubby, disheveled, and foul-smelling little beings. With his army of minions, he's determined to make the whole world a stinkier, messier place. But will our clever kids fall prey to his filthy tricks? Join us on a hilarious and silly adventure as we follow Mr. Filth and his gang through various comical scenarios in pursuit of their dirty mission!