Developed from Japanium ore is the super energy, Photon Power. Seeking this energy is Dr. Hell, a madman craving world domination who along with his subordinates Baron Ashura and Count Brocken, commands the Machine Beasts excavated from Bardos Island (believed to be Rhodes) to attack the Photon Power Lab and take it for himself. Meeting the attack head on is our hero, the hot-blooded teenager Kouji Kabuto who pilots the super robot Mazinger Z, constructed by his grandfather Juzo and made from the strongest metal Chogokin Z. But in this battle between Dr. Hell and the Kabuto family, many legends surrounding the Mycenaean Civilization and Bardos Island, as well as the secrets of Mazinger Z remain shrouded in mystery.

Episode titles:

• 1. Grand Finale
• 2. Activation! Mazinger!
• 3. Sortie! Ashura Corps
• 4. Fierce Battle! Mechanical Beast vs. Mazinger
• 5. Assault! Count Brocken
• 6. Fire! Photonic Beam!!
• 7. Legend! The Mechanical Beasts Of Bardos!
• 8. Birth! Baron Ashura
• 9. Commence! The Japan Invasion Operation!
• 10. Impregnable! The Kurogane Five!
• 11. Pincer movement! Mechanical Beasts big strategy!
• 12. Escape! Undersea Fortress Saluud!
• 13. First love? Beautiful Girl Lorelai!
• 14. Shame! The grave sin of the Kabuto family exposed!
• 15. Confrontation! The sorrowful blue Donau!
• 16. Exhumation! Battle brain Kedora!
• 17. Joint struggle! Travel to the dangerous past!
• 18. Disappearance! Mycenae's last day!
• 19. Grudge! Kurogane House's longest day (first part)
• 20. Grudge! The longest Day of the Kurogane House (Middle Part)
• 21. Grudge! The longest Day of the Kurogane House (Last Part)
• 22. Dreams! Asura Sleeping Inside a Cocoon
• 23. Getting Closer! Machine Beast Baron Asura!
• 24. Verge of Death! All-out Attack Dr. Hell
• 25. Reversal! Setting Sun of Bardos!
• 26. Conclusion! The Hundred Barrage Rocket Punch!