Dr. Meta-Evil uses Metabee's medal to control every Medabot in the world! Brass starts to attack Erika and Karin and Kantaroth starts attacking Rintaro and his group. Dr. Meta Evil was once Dr. Hushi's assistant. Dr. Hushi found out the power of the rare medals and he wanted to destroy all his research and findings, but Dr. Meta-Evil stole the information to use it for evil.
