Nightingale wraps his arm around MacDonald during a scrum and takes him hart to the ice. MacDonald gets up pissed, and Nightingale is skating away backwards (to lose the linesmen) and drops the gloves. MacDonald comes forward and drops the mitts too. They both quickly remove their helmets and square off.
When they came together, it was all Nightingale. He fed MacDonald about 5 shots, then MacDonald repositioned himself, and proceeded to eat another couple punches.