When a devastating earthquake strikes, Danny finds himself trapped in a nightmarish situation, isolated and terrified. As he struggles to come to terms with his claustrophobia, his worst fears materialize as a monstrous entity emerges from the cracks in the ground. With no way to escape, Danny is forced into a harrowing battle for survival and his grip on reality begins to slip away. Can he find the strength to confront this terrifying presence and make it out alive, or will he succumb to his own inner demons?