The Iron Cross Army are sabotaging oil-tankers with the help of their monster, the Sea-Devil, a semi-mechanical anthropomorphic swordfish with an ability to shoot torpedoes from its mouth. Spiderman employs the help of the interpol agent Juzo Mamiya to help him stop the Iron Cross Army.
Professor Gill has created a machine that lets him restore destroyed robots. This machine is used to recreate all of the destructroids that had been destroyed by Kikaider. Kikaider is forced to destroy them all once again, and a new Destructoid Multi-Colored Sand Lizard.