In the 1970s, a social worker named Anna Tate-Garcia faces a life full of challenges following the death of her husband. Anna's routine is disrupted when she investigates a disturbing case about a mother who loses control and ends her children's lives. As she delves deeper into this tragic event, she begins to hear rumors about a terrifying legend that surrounds the story: a ghostly figure that weeps for her lost children.
Desperate to understand the truth behind these events, Anna learns that La Llorona, a malevolent spirit that preys on children, is behind the tragedy. When her own son, Chris, and her daughter, Samantha, become targets of this evil entity, Anna realizes she must act quickly to protect her family. With the help of a priest experienced in supernatural situations, Anna enters a world of rituals and chilling revelations, where the boundaries between the world of the living and the dead blur.
As the threat of La Llorona intensifies and paranormal occurrences surround her, Anna must confront her own personal demons and the desperation to save her children. In a desperate struggle between good and evil, she will be forced to trust her maternal instinct and discover how far she is willing to go to protect her family from the darkness looming over them.