It's Halloween, but the Superchums are kept behind in detention when they accidentally destroy the school's trophy cabinet. They must write an essay using books from the forbidden section of doom in the library. Brass Butt reads aloud a curse from a book causing Ramsferatu, a Vampire Sheep, to come to life. He visits the Superchums, but is scared off by Eric's woollen sweater. At the annual pumpkin carving, Brass Butt is slowly turning into a sheep and Ramsferatu arrives to 'butt' the townsfolk. Eric deduces the book is the cause so he takes the Superchums back to the library, but a fully-transformed Brass Butt-sheep is there to chase them. Eric throws his sweater at Brass Butt to scare him off, and starts work on another plan. Using Changerella as a sheepdog, they capture Brass Butt-sheep to shear his wool and knit a giant sweater for themselves. The Superchums make their way to Ramsferatu's castle to recite the curse when they realise the sweater has unravelled. Eric distracts Ramsferatu long enough for dawn to arrive, causing the vampire sheep to turn back to normal.