Fabiola (Elsa María Gutiérrez) is a rich but very lonesome young girl living in Mexico City who becomes friends with an orphan named Graciela (Ana Patricia Rojo). Although Graciela has a strange and potentially harmful interest in witchcraft, Fabiola is delighted with her newfound friendship, even when Graciela convinces her that she's a witch. As things grow more twisted, the girls get caught up in a dangerous murder plot.