Finding an old phone in a forgotten box in the attic is no surprise. But... this phone had no wires. It had no screen. It was black, heavy and covered in dust, as if it had been waiting for me for years. And then... it rang. The sound of the bell was unlike any other. Deep, metallic, almost hypnotic. I shouldn't have answered it. But... I picked it up. - Hello? Silence for a moment. And then I heard my own voice. - You don't have much time. Listen carefully... WHAT! - Who are you! - I asked, but the answer froze my blood in my veins. - I am you. But from the future. I clutched my forehead. - You're joking, right? The voice on the receiver didn't sound like he was joking. - Don't ask. Just... DON'T OPEN THE DOOR. I looked at the door of my room. And then someone... started knocking.