Dark times come to the Earth. A big asteroid hits the planet. The cities are ruined, and many people die. Those who have stayed alive are left homeless. The only way to survive for people is to go underground. They begin mining valuable resources such as iron, sulfur, and diamonds. It is their chance to rebuild their civilization and start a new life. To reach this goal they work hard using bombs, pickaxes, and jackhammers. Some miners choose safe mining because they don’t want to put on a risk everything they have. Others prefer trying their luck and choose risky mining. The bravest miners put everything on the line and either reach for the stars or end up broke.