In 1976, on the eve of Halloween, an itinerant troupe is forced to stop their truck and attacked by strangers. Charly, Venus Virgo, Panda Thomas, Levon Wally and Roscoe Pepper survive. They are forced to participate in a sadistic game called "31" for 12 hours, and whoever survives will be released. Soon they are attacked by sadistic killers dressed like clowns. Will someone survive to the "31"?—Claudio Carvalho, Rio de Janeiro, Brazil