Ten thousand feet below the surface of the Earth, an elite team of workers are inaugurating their company’s latest and greatest piece of machinery, the Branagh Drill. Suddenly, a catastrophic event traps the team and the brand-new drill at the bottom of the mine shaft. In order to reach the surface, the ten survivors must continue their descent-which sounds counterproductive, yet is the only accessible way. But the perilous journey proves even more harrowing when the survivors realize they are not the only ones trapsing amongst the ruins and searching for a way out.