Ignoring the eerie warning of a troubled mother suspected of child endangerment, a social worker and her small kids are soon drawn into a frightening supernatural realm. Their only hope to survive the deadly wrath may be a disillusioned priest and the mysticism he practices to keep evil at bay, on the fringes where fear and faith collide.

In ancient Mexico, beautiful Maya's children are endangered by the threat of Seǫr Tiempo who, jealous of their immortality, plots to destroy them.

In ancient Mexico, the beautiful and magical grandchildren of the Sun God are endangered by the threat of Seǫr Tiempo who, jealous of their immortality, plots to destroy them.

"Since the fall of Tenochtitlan, the Mexican people have whispered her name. Navajo tales have forever warned of her threat. And along the vast Rio Grande, she has claimed many victims. La Llorona, the wailing woman, searches our rivers for her children and cries out, "Ay mis hijos... Donde estan mis hijos?" Yet, she can never find them. She freed them from this world long ago. Children avoid the river at night, wayward men dread her vengeance and...

In Silver Springs, Arizona, her mother's stories of the monstrous La Llorona are thrilling but unbelievable to science-loving Paola until she and her best friends Dante and Emma take a walk through a cactus field near the Gila River.