Penn & Teller present the following true or false stories, where only one will be false: Which has a higher kill rate, a machine gun or a single-shot automatic AR-15? Is there a clothing line made out of sour milk? Did a group of children from an educational school really send up a pizza box covered in foil and duct tape with a large weather balloon, into space? Did a man in 2004 really beat a horse in long distance marathon? Does a woman named Nina Rodecker really make and serve floating cotton candy, using helium? Are carnivals really using basic physics to cheat you out of money in a bottle game? Can two big monster trucks really not pull apart two large pieces of Velcro?