A vibrant cartoon with colours and smooth animation. Title: "THE KNOCKING" Create a 45-second cinematic 2D/3D animated horror short, PG-13, with suspense, eerie atmosphere, and no gore. Scene 1 - 0-8 seconds A teenage boy is alone in his house at night. Heavy rain hits the windows. The lights flicker. He sits on his bed scrolling through his phone when suddenly... KNOCK. KNOCK. KNOCK. He freezes. Scene 2 - 8-17 seconds He slowly walks toward the front door. The knocking stops. He looks through the peephole. Nobody is there. He whispers, "Who's there?" His phone suddenly receives a message from an unknown number: "DON'T OPEN THE DOOR." Scene 3 - 17-27 seconds The boy steps backward. Then another message appears: "I'M WATCHING YOU." He looks around the room nervously. The lights go completely out. A faint silhouette appears behind the glass of the front door. Scene 4 - 27-38 seconds The lights flicker back on. The silhouette is gone. The boy checks his phone again. A new message appears: "TURN AROUND." He slowly turns around... Nothing. He lets out a nervous breath. Then he notices something terrifying: His bedroom door is slowly opening by itself. Scene 5 - 38-45 seconds The camera moves closer to the dark doorway. A quiet child's voice whispers: "You weren't supposed to read the messages." The screen suddenly cuts to black. One final KNOCK is heard. END.