Ohm Bauman is an American author struggling to finish the epilogue of his successful
Conquistador trilogy. After glimpsing the ghost of his mother at home, Ohm decides to visit The Bilberry Woods Hotel in rural
Ireland, where his parents had honeymooned, to lay their ashes. Ohm meets the hotel staff: owner Cob, his son-in-law and front desk clerk Mal, groundskeeper Fergal, bartender Fiona and bellhop Alby. Ohm is abrasive and dismissive toward them all, but warms to Fiona after she identifies the location of a photo his mother took. While spreading his parents' ashes, Ohm encounters Jerry, a local living in his van who frequently consumes milk laced with
magic mushrooms. Back at the hotel bar, Fiona and Alby tell Ohm that the honeymoon suite is locked off and supposedly haunted by a
witch that Cob had trapped inside. After belittling Alby's dreams of a writing career and burning his hand, Ohm returns to his room. Concerned, Fiona checks on Ohm and discovers he has hanged himself. Ohm awakens in hospital some weeks later, alive thanks to Fiona's intervention. When he returns to the hotel, Mal informs him that Fiona has been missing since the hotel's Halloween party. Mal also tells Ohm that Jerry is the prime suspect for both Fiona's disappearance and the murder of his wife. Ohm confronts Jerry, who claims to have seen Fiona's ghost in the hotel one night directing him to the honeymoon suite. Ohm doesn't believe Jerry's story but he agrees to check the suite with him after dark. While the two wait, Jerry confesses to killing his wife, but says it was a mercy killing due to an unspecified illness. He also claims that his wife's spirit thanked him after the fact during one of his mushroom trips. With the hotel closed for the season, Ohm and Jerry break in to investigate. Fergal apprehends and knocks Jerry unconscious before driving him to the
Garda. Undetected, Ohm sneaks into the honeymoon suite, where he is haunted by supernatural visions of his mother and memories of shooting her dead by accident with his father's gun as a child. Mal arrives to retrieve Ohm, but as they start to leave, Ohm inspects a dumbwaiter, discovering Fiona's corpse inside. Mal locks Ohm in the suite and flees the hotel. Ohm finds a tape recorder on Fiona and learns that Fiona was pregnant with Mal's baby; Mal drugged her and locked her in the suite to prevent his family finding out. Jerry awakens in Fergal's van and jumps out before returning to the hotel. The hauntings intensify as Ohm struggles to find a way out. Spotting a fire escape on a map of the basement, Ohm descends via the dumbwaiter. He encounters the witch and escapes back up to the suite, where he fends her off with a protective circle of chalk. In the morning, Mal returns to the hotel to dispose of Ohm and is surprised to find Jerry trying to get into the honeymoon suite. He nearly convinces Jerry to leave, but Ohm manages to ring the suite bell, alerting Jerry to his presence. Mal starts a fire in the hotel to cover his tracks before shooting Jerry dead with a crossbow as he enters the suite. Ohm flees into the basement with the keys to the suite elevator, pursued by Mal. Mal finds the keys but is attacked by the witch, who chains him up and drags Mal to the underworld. Ohm makes peace with his mother's ghost and removes his own chains before escaping the basement. As the hotel burns, Ohm collapses but is saved by Fergal. Alby visits Ohm in hospital, telling him Fiona and Jerry's remains have been found but Mal is missing. Alby admits to vengefully spiking Ohm's whiskey with Jerry's mushroom powder. Ohm notices he still has rust on his wrists consistent with being placed in chains, and recalls Jerry telling him that drugs allow humans to glimpse the supernatural, which is real but otherwise invisible to those with "closed minds." Ohm promises to read Alby's manuscript, and finishes writing a more hopeful ending to his Conquistador book. ==Cast==