A psychology student isolates himself for an experiment for college to see how long the human mind can endure without social contact. As isolation and loneliness stretch on, reality begins to blur. Strange sounds, unsettling thoughts, and visions invade his mind. What was meant to be a simple study becomes a terrifying journey into his own psyche, forcing him to confront the dark effects of solitude. Alone in a house with only his thoughts, he realizes the mind might not be as controlled as he once believed.