The video shows a person drawing on a whiteboard with a red marker. The person draws a horizontal line at the top of the board, followed by several vertical lines pointing downwards. The person then draws a horizontal line at the bottom of the board and adds several diagonal lines pointing upwards. The person then draws a horizontal line connecting the top and bottom lines, creating a bridge-like structure. The person then draws additional lines connecting the top and bottom lines, creating a network of lines. The person continues to add lines, creating a complex and intricate design. The video ends with the person completing the drawing.