Doctor Claw is competing against Baron Von Steeltoe to see which one can deface the most world monuments. Penny is preoccupied with studying for her exams and Gadget is obsessed with the 'Angry Arnie' post-apocalyptic movies. / Talon proposes to use the experimental Switcheroo 2000 to swap the brains of Brain and MAD Cat so she can steal H.Q.'s new pass-codes.—The TV Archaeologist