Two teams compete to pull practical jokes on an unsuspecting public. Beastly Besties Priya and Cosy and Cheeky Pranksters Joe and Will team up with prosthetics and make-up guru Shaune Harrison and creature creator Rob Mayor to take over Manchester Museum. But which team will impress our prank-loving panel of ranksters to win the chance to stage a prank on a target of their choice? For the winning team, our effectors Rob and Shaune have planned the ultimate prank, set in a movie-style casting room, complete with green screen, video crew, wind machine and an eccentric Hollywood director.