You'll fall in

A man in a striped shirt stands in a doorway, then falls backward down a stairwell, tumbling out of view. The scene cuts to a man in a dark jacket standing in a room with red walls, holding a glass and smiling. The video returns to the stairwell, showing the man's body lying motionless on the floor at the bottom of the stairs. The camera then moves down the stairs, revealing the man's body lying on the floor at the bottom of the stairwell. The camera then moves up the stairs, showing the man's body lying on the floor at the bottom of the stairwell. The camera then moves up the stairs, showing