As for the premise: "Previously on South Park" (in a nonexistent episode), Chef decides he's bored and needs more excitement in his life. He sees a brochure for Super Adventure Club and thinks traveling to exotic locales all around the world sounds like tons of fun. He boards the club's DC-8 and flies off into the sunset. Then on Part 2 of "Life without Chef," Mr. McAvoy comes back home to the elation of the entire town. But people quickly notice that Chef ain't quite right, with a heretofore unseen desire to make sweet love to the children's rectums. The boys determine that he's been brainwashed by "that fruity little club" and set out to save him. Much hilarity and thinly-veiled slaps at Scientology ensue.
Chef's voice for this episode was cobbled together from dialogue recordings from the previous seasons. There are several instances where, in the course of a single sentence, he will go from a normal speaking voice to a few words of song to a shout. At the very end, his voice is suppllied by Peter Serafinowicz, who was the voice of Darth Maul.