Mining country in Appalachia has been declared The Devil's Playground. A close-knit group of veteran miners, all friends and family, commence what would be a normal day's work - except today a rookie, the son of one of our veterans and the god-son of the Section Leader, joins them, 18-year-old Ryan. With ever-growing safety concerns at the mine, Zeke (section Leader and longtime coal veteran), struggles with the correct course of action, weighing, on one hand, the safety of his men, and on the other, the need to earn a steady wage in an economically depressed region. Today, however, fate takes matters into its own hands when a huge methane explosion rips through the mine. Smoke engulfs the men, forcing them to rely on nothing more than brains, braun, and faulty self-rescuers (oxygen tanks that afford one hour of air). Mine 9 is the story of the struggle for survival against all odds; men trapped in hell as the results of exploitation, greed, and circumstances.