Five random people are kidnapped on the five days leading up to Halloween and held hostage in a place called Murder World. While trapped inside this man-made Hell they must fight to survive playing the most violent game known to man... a game called 31. 31 has no rules. 31 has no boundaries. It is ever so simple. Do whatever you can do to kill your opponent before they kill you. Keep this up for 12 hours and freedom is yours. Who are the opponents? Well... a group of vile, filthy, blood-thirsty clowns known as THE HEADS. They come in all shapes and sizes and each grows nastier than the last.