It was midnight. The moon was full, illuminating some buildings along with streetlights. Mysterion was chasing Professor Chaos, who was running up the stairs to the roof of a very tall building, trying to get away. He eventually got up to the roof, slamming open the door and rushing to find a different way down. He stopped once he heard the hero call out "Chaos!! Stop right there..!". He quickly turned to see Mysterion, who had run up to him and punched him. Then a fight broke out, but due to them not paying attention to their surroundings, Chaos fell over the edge of the roof, accidentally dragging Mysterion along and falling with him.