More secrets of Rokusho's past are revealed when he discovers than Dr Aki was the one who set fire to Professor Hushi's house. When Rokusho prepares to exact his revenge on the doctor, Metabee intervenes and challenges his mysterious ally to a Robattle. The battle seems to be going Metabee's way, but the mysterious Rokusho has a trick up his sleeve - the Medaforce. Is there anything that can stand in the way of such a devastating attack?