After almost drowning in a lake, Madison finds herself living a life of fear. Crippled by her past trauma, Madison attempts to shut out the world, but her fear of water intensifies and she is faced with a recurring vision of a dark figure that haunts her day and night. After watching her struggle for a year, Madison's four friends attempt an unconventional intervention in the form of a séance, which opens a floodgate that none of them anticipated. As Madison and her friends dive deeper into the dark history of the figure that haunts them, it reaches out and begins dragging them one by one to a horrifying place from which they can never return.