Tired of the harebrained antics of the other Rubberobos, Shrimplips assumes control of the gang. He calls in the supreme Rubberobo leader, as shadowy character who communicates to the gang via television broadcast. The leader gives the Rubberobos a new goal: seek out rare medals. Meanwhile, Ikki and Metabee encounter a strange old man who offers to make them his apprentices. Ikki and Metabee are weirded-out, until they realize that this man is none other than Doctor Aki, the head of the Medabot Corporation and the inventor of Medabots. (The fact that hes Karins uncle doesnt hurt, either!) Ikki leaps at the chance to become Dr. Akis apprentice. But Metabee is convinced he doesnt need a teacher. To prove otherwise, Dr. Aki demonstrates the power of a Medabot in capable hands. He borrows Cyandog, and manages to command him to victory over Metabee! Metabee grudgingly goes with Ikki to Dr. Akis house. There, they discover that Koji and Sumilidon are also apprentices to Dr. Aki. This seals the deal for Metabee if Sumilidon is training under Dr. Aki, so will he. Seeing Neutranurse with Dr. Aki, the Rubberobos conclude that she is his Medabot, and therefore possesses a rare medal. They abduct her using their spider Medabot Spidar. The Rubberobos remove her medal and offer it their leader. The medal is not, as it turns out, a rare medal. To save Neutranurse, Metabee battles Spidar. Ikki ignores Dr. Akis advice, and risks it all to win the robattle. Neutranurse is saved, but Dr. Aki i...