Mia is a mental patient haunted by a disembodied voice who claims to know how to find her missing son. She escapes from the psych ward where she resides, assuming that her child is being held captive at a house occupied by an ex-rock star, Brad, and his friends. Convinced that Brad is her estranged husband responsible for abducting her son, Mia imprisons him and his friends in the house, forcing them into an inescapable nightmare filled with horrifying consequences. As the night progresses and the body count rises, Brad and Mia unearth a dark connection between them that will alter their lives forever.