A mysterious pandemic has spread across the planet, causing the world’s population to be stricken with a strange affliction that causes instant death as soon as anyone steps outside. Young computer programmer Marc was in his office in Barcelona when the epidemic struck; three months later, he and his colleagues are still trapped in the building, and supplies are running low. With nothing left to lose, he sets off on a mission to find his girlfriend on the other side of town, but to get there, he must navigate the lawless catacombs that have developed in the subway. Superb special effects transform Barcelona into a dystopian wasteland in this action-filled post-apocalyptic thriller.