Zdař Bůh enters the underground, where the history of Czech mining was written for generations. However, this era is slowly ending. Mining determined our strength, fed industry, shaped politics and society, but left victims and scars both in the landscape and on human bodies. The documentary series by Czech Television creates a mosaic of cunning, courage and cruelty. From miners' pride and technological progress to the moment when the mine became an instrument of power. Every feat is a test of human capabilities, cohesion and, above all, a great love for work.