Down-and-out backup singer and celebrity ex-husband Kasper (Valter Skarsgård) is invited to compete in The Funhouse, an online Big Brother-style reality show. To rebrand his image and tarnished reputation, Kasper reluctantly accepts the offer. Together with 7 other C-list celebrities from around the globe, he will compete for the $5 million grand prize. At first, The Funhouse is just as the name suggests, full of wild times, budding friendships, love connections, and brewing rivalries. To everyone's surprise, the fun quickly turns into a nightmare when the first challenge leaves one of the contestants brutally murdered, and the housemates soon realize that they are in the clutches of a sadistic mad man disguised as a computer-generated panda bear.