A married couple loses their children while on a family trip near some caves in Tijuana. The kids eventually reappear without explanation, but it becomes clear that they are not who they used to be, that something terrifying has changed them.
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Character: Felix
Character: El Policia
Character: Sol
Character: Adolfo
Character: Sara
Character: Lucio
Character: Encargado gasolinera
Character: Doctora
Character: Sandra
Character: Abril
Character: Hombre
Character: Marcia