When former crime novelist Shaan Verma checks into the derelict Imperial Grand Hotel to overcome writer’s block, he expects silence, coffee, and maybe the occasional rat. Instead, he finds a cursed key marked simply ‘NULL’—a key that doesn’t belong to any registered room. Out of curiosity (and boredom), he takes the elevator to a floor that isn’t listed on the panel. The button glows red anyway. Welcome to Floor Null—a phantom level that shouldn’t exist. Every time Shaan opens the door to a room, he walks into a grotesque version of a memory from his past: a failed relationship, a childhood betrayal, a lie that cost a life, and finally, the secret he swore he buried when his sister disappeared 20 years ago. Each room is a personal hell. Each room knows him. Each room won’t let him leave unless he survives it—not physically, but emotionally, morally, and spiritually. But the real horror? Shaan realizes that he didn’t come to the hotel by accident. The hotel came for him.