Illegal cage matches, ass-kicking, and time-travel abound when Trixie returns to Ponyville to challenge Twilight to a bare-knuckle boxing match. Why has Trixie come back? What does she want? Whose ass will be kicked? And what's up with the time-travel bit? The answers to these, and less interesting questions, can be found in, Lock, Stock, and Two Smoking Hooves.