The series exists to show gigantic and hideous robots hammering one another. So it does. The last hour involves a battle for the universe which for some reason is held at the corner of Michigan Avenue and Wacker Drive in Chicago. This battle is protracted mercilessly beyond all reason, at an ear-shattering sound level, with incomprehensible Autobots and Decepticons sliced up into spurts of action with no sense of the space they occupy.