Kyle and Shannon, a young couple from Atlanta, move into what seems like a quiet, charming apartment building to start fresh. Their new life takes a sinister turn when they notice strange noises and odd behavior from their downstairs neighbor, Marcus. Friendly yet unsettling, Marcus begins to cast a dark shadow over their days, as unexplained noises, foul odors, and midnight movements make Kyle and Shannon increasingly suspicious. When they finally uncover the horrific secret Marcus has been hiding, they realize they're in a fight for their lives, trapped with a killer in the heart of what was supposed to be their sanctuary.