Kellingley Colliery in North Yorkshire is the last deep coal mine in Britain, and this film follows its closure as the final chapter of an industry that once employed over a million men. Miners describe the physical toll of working underground, the camaraderie of the pit, and the anger left over from the 1984-85 strike and the confrontations with Margaret Thatcher's government that broke the National Union of Mineworkers. Archive footage of packed collieries and picket lines sits alongside present-day interviews with men clocking their last shifts, uncertain what work exists for them once the cages stop running. The film traces the economic and political decisions, cheaper imported coal, the shift to gas and renewables, and the deliberate winding-down of state support, that turned mining towns from engines of the economy into places defined by unemployment. It closes on Kellingley's final days, treating the closure not just as an industrial statistic but as the end of a way of life for entire communities built around the pit.