In the fourth installment of the 'Leyenda' saga, Leo San Juan and his gang will take on the Chupacabras.
A group of kids search for a girl in a place named Guanajuato in Mexico.
Leo must enlist the aid of his friends after being fooled by the Charro Negro, resulting a girl to be cast into the underworld.
Five years after giving up his powers, Leo San Juan is accompanied by Nando on his way to Veracruz, when an ancient local curse strikes. This time Leo has no powers, no friends, no time, and apparently no opportunity.
The little Calavera duo, Finado and Moribunda, must leave their comfort zone away from Pueblo Calaca when a human infant crosses the Eternal Mirror, absorbing energy from a portal that separates the Realms from the living and dead.