Lady Mega disguises herself as a fortuneteller to turn humanity against the Autobots, who at first didn't know about their involvement in predictions of disasters. Their latest plan was to destroy the Watson Dam where Giga, in his Overlord-like transector (affectionately named the "Gigatank"), successfully does after the Destron's weapons proved too weak to do so. The autobots though speed on over: the headmaster-junior trio take care of anyone threatened by the incoming water and in doing so prove they were the good-guys, while Ginrai personally chases Mega, but that is just what she wants him to do until the juniors intervene...