Young Juan and his cousin Luz savor Abuelo’s hair-raising stories. He tells the children of defeating terrifying fiends like the Chupacabras and La Llorona. The children cling to every word as he describes his brave stand-off with the Chupacabras, a terrifying beast with wings, claws and sharp fangs. But yet they wonder if there’s more to his strange story than meets the eye. Plucky Luz hatches a plan to either disprove Abuelo’s tale or hunt down the menacing monster and put an end to it once and for all. Armed with a bag of marbles dipped in holy water and a sling shot, the children venture into a cornfield one moonless night in search of the truth.