Plot

A professor frantically searches for his son who was abducted during a Halloween carnival.

One year after Mike Lawford's young son disappeared during a Halloween carnival, he is haunted by ghostly images and terrifying messages he can't explain. Together with his estranged wife, he will stop at nothing to unravel the mystery and find their son-and, in doing so, he unearths the legend of the crying woman who refuses to remain buried in the past.

On Halloween, in New York, Mike Lawford has just been promoted to professor with the support of his friend Hannah. Mike meets his family and takes his son Charlie to see the Halloween parade while his wife Kristen goes home to prepare a design for her client. While buying a cone for Charlie, the boy asks whether they can pay the ghost and vanishes. Mike and Kristen seek out the boy and he presses NYPD Detective Jordan to find his son. One year later, Mike researches and finds that children that disappear on Halloween are never found by the police. Furthermore every year three children vanish. There is also a connection to the Celtic colonization of New York three hundred years ago. Will Mike save his beloved son?—Claudio Carvalho, Rio de Janeiro, Brazil

New York professor Mike Lawford celebrates winning tenure by taking his kid son Charlie, who waited in vain to cut the Halloween pumpkin and had to do trick or treat with mother Kristen, to the Halloween fair. In a moment of distraction to pay the ice cream, the boy goes missing. SEven years of posting missing pictures and goading the police investigation yield nothing, except a theory that someone must be behind the multiple number of kid disappearances at Halloween, while his marriage broke down as Kristen stupidly blames him. Checking up on strange things Charlie noticed, Mike stumbles upon the underground tunnels where the homeless fear the annual appearance of a supernatural prime suspect from Celtic mythology, and runs the misty gauntlet to recuperate his prince.—KGF Vissers

A professor, Mike Lawford frantically searches for his son Charlie, who was abducted during a Halloween carnival. As nearly a year goes by, the parents are still looking for their son and starting to hear and see their son reaching out to them from the other world-Mike sees his son on a passing bus, but upon chasing the bus down and gaining access, his son is not there. He disembarks and notices spray painted on a building, "pay the ghost," the phrase his son uttered before vanishing. He enters the building and finds homeless people living there. Unearthly screams of a woman are heard, and a blind homeless man calls for the others to mask their fires, explaining to Mike that the screams are heard every year before Halloween. Mike asks about the phrase, and is taken to a wall with more of the same phrases written on it. Engrossed by the wall and the homeless man, he does not notice the wall behind him shift into another world, and a demonic figure briefly appears behind him, then vanishes. The homeless man explains nothing, but quickly tells Mike to leave.

His wife Kristen later sees their son's scooter move on its own, and calls him. Later that night while pouring wine, the power in their home goes out. Mike looks out the window to see three children appear and burned at the stake, then turns and sees his apartment crowded with figures of children, standing lifeless and pale. They call a psychic to investigate. Standing in their son's room, she senses nothing, but then abruptly walks to the window, looks at the approaching storm, and says, "It's here... it has all the children." The psychic is then thrown against the wall and strangled before collapsing, burn scars all over her hands. A later autopsy shows her internal organs were burned to ash.

Later, Mike walks upstairs to his wife's room, and she addresses him with their son's voice, pleading for help and saying "She's coming, Dad. I'm scared." He walks closer, and sees his wife cutting herself. Cleaning the wound, they find a symbol, which leads them to a Celtic Halloween celebration. A participant explains that the children are burning dolls to pay the ghost, so they will not be taken. Their friend Hannah who was helping them by doing research calls Mike and says: In early New York, on Halloween night of 1679, because of her Celtic worship, a young widow living on the first New York settlement was burned alive with her three children by an angry mob of settlers suspecting her to be a witch. She takes revenge every year on Halloween, when the border between the spiritual world and the physical world dissolves for a short time. Since then, every Halloween the ghost of this woman takes three living children from their parents and puts them in an alternate world. The borders solidify until next Halloween, and the children taken are able to reach out and be rescued. But if the children cannot escape this alternate world within the first year, they are stuck in this world forever.

After Mike and Kristen are injured in the taxi by a flock of black vultures, Hannah is thrown out of a window and killed while trying to leave the institute. Mike returns to the same building and finds the blind homeless man again, he gives him his watch in exchange for helping him find his son Charlie. He shows Mike the hazy road and tells him that he has until Halloween ends at midnight, otherwise he will be trapped there forever. Mike arrives at the widow's cabin and goes down to the basement where he finds the souls of many children who were locked up over the centuries at Halloween time. Mike finally finds Charlie along with two other children that were also taken within the last year.

While the four of them are escaping, the ghost widow appears as she has learned that they were attempting to escape. She tries to stop Mike from taking the three children away by trying to kill him. All of the other children's souls arrive to help him, and they are able to kill the ghost widow by surrounding her, unknowingly freeing themselves into the afterlife. Mike and the children manage to get out just as the portal closes. At dawn, Mike and his son Charlie finally make it home. While reuniting with Kristen it is revealed that Charlie has no recollection of the time that he spent missing. Outside, a black vulture is seen flying away.

In a scene mid-credits, three black vultures appear surrounding Hannah's corpse and she awakens, possessed.