The school is holding a medieval festival. While Groundskeeper Willie is on stage, bart has an idea for a prank. He collects the helium balloons from around the school and ties them to Willie's kilt. The audience is in for a surprise. Bart laughs hysterically but Willie is angered beyond belief. He wants revenge! So he kidnaps Bart and cages him. He proceeds to strip Bart naked, murder him, and cook his remains. The next day at the festival, Willie's haggis is on the menu.