Metalocalypse (2006)

Season 4: Episode 1

Despite his bandmates' warnings, Nathan begins seriously dating one of his fans. But as the evidence of her past piles up, to prove her innocence, he follows her to the most brutal place on earth: Klokikon - the annual Dethklok fan convention filled with cosplay geeks and homosexual fan art. Meanwhile, the rest of the band starts smoking after Murderface lands the cover of Smokaroonie Aficionado.