To protect the Kingdom of Mu from the attacks of the Dragonian army, the young princess Aira Mu prays to the stone statue of the guardian deity God Mazinger and summons Hino Yamato from the modern world.

Yamato is told by Aira's maid, Madoma about the tragedy that the Kingdom of Mu experienced.

On the night of the feast, a female warrior and a shaman unit under the direct control of Dorado sneak into the temple of God Mazinger.

Mu's soldiers and Yamato play rugby; the Dragon Knight's Army led by Bura attacks the southern castle gate.

Eld of Dragonia learns that God Mazinger will not move without Yamato; they launch a surprise attack and wait for Yamato in front of the temple.

Bura attacks the west fort of Mu with a ferocious rock-eating dragon in search of the "light inn;" Aira heads for the fort with Madoma in search of the "Light Bearer," and encounters Eld on the way.