Sarita goes out dancing one night at the insistence of her free-spirited sister, Bea. Uncharacteristically, Sarita dances the night away, heading home alone when the party drags on too late. The next morning, after calling friends and neighbors, Sarita begins to panic when she realizes that Bea never made it home. The police are indifferent and unhelpful, but Sarita suspects that Bea's disappearance has something to do with Andrés, her sister's dangerous...