An eccentric billionaire's obsession with a private radio station becomes a conduit for terror. For sugar baby Elara, life in his mansion is a golden cage, but when his voice-actor 'alarms' are murdered one by one, a mysterious caller begins to haunt their airwaves. The messages are a countdown to a bloody ritual, all dedicated to an ancient evil sleeping within the mansion's walls. As the bodies pile up, Elara realizes the killer isn't just outside—he's being invited in, and the price of entry is their flesh.