It’s the early 20th century, and two strange-looking boys, purportedly twins named Iko and Eko, are playing in a circus band in one of the many stopovers on the freak-show circuit running from Ohio to Texas. The brothers are ghostly pale, with thick white dreadlocks and red eyes — natural albinos who, when they are introduced by the sideshow huckster, are described as ‘ambassadors from Mars’ — and this makes them fairly valuable.