Kouji Kabuto seeks revenge against Dr. Hell, who murdered his grandfather and controls an army of mechanical beasts with his cane, often using them to unleash devastating attacks. Dr. Hell's plans are carried out by his loyal henchman, Baron Ashura. Meanwhile, Kouji pilots Mazinger Z, a powerful robot made from the indestructible Super-Alloy Z. Mazinger Z has the capability to perform special attacks, including the Koushiryoku Beam and Rocket Punch.