When a flood leaves dozens of workers trapped in a coal mine, an engineer embarks on a daring rescue mission to save them. Inspired by real events.When a flood leaves dozens of workers trapped in a coal mine, an engineer embarks on a daring rescue mission to save them. Inspired by real events.When a flood leaves dozens of workers trapped in a coal mine, an engineer embarks on a daring rescue mission to save them. Inspired by real events.