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Inspired by sinister actual events, Ominous tells the story of a typical family that travels to a secluded cabin in the woods for a quiet retreat, and finds themselves beset on all sides by malevolent supernatural forces. As 20 years of buried secrets begin clawing their way to the surface, paranormal activity in the cabin begins to spike, prompting a desperate struggle for sanity and survival amongst the haunted parents and their unsuspecting children.