The sun has fully set, and the scenery visible from the window is enveloped in darkness. As you spend time in your room, the phone rings. Brring, brring... The caller ID that should normally appear shows nothing. Brring, brring... You slowly bring the phone to your ear. Then you hear a voice so cold it sends a chill down your spine.

And then, the call ends immediately. About ten minutes pass, and your phone rings again