Alone follows a writer seeking peace and solitude in the countryside in an attempt to recover from tragedy and finish her book. However, as the welcoming country house turns into a living hell, she soon realizes that her inner demons are not the worst of her problems.
A young woman enlists in an underground game of pain endurance in the hope of winning the million dollar prize. She soon learns the real opponent is the man who's running the game, as he employs horrific methods to manipulate and defeat her.