When Kriemhild, thirsty for revenge, marries to Etzel, king of the Huns, she invites King Gunther and his court to visit them, intending to finally take the life of the man responsible of her disgrace.

The misadventures of Attila and his band of barbarians as they take up arms against the Roman Empire in their native Milano

Attila, the leader of the barbarian Huns and called by the Romans "The Scourge of God", sweeps onto the Italian peninsula, defeating all of the armies of Rome, until he and his men reach the gates of the city itself.

Roman centurion Marcian is captured by Attila the Hun en route to Constantinople, but escapes. On arrival, he finds the eastern Roman emperor Theodosius plotting with Attila to look the other way while the latter marches against Rome. But Marcian gains the favor of Pulcheria, lovely sister of Theodosius, who favors a united Empire.

Now Brunhild knows by which treason she was won for king Gunther of Burgund by Siegfried of Xanthen, and has been revenged by his foul murder by Hagen, more bloody revenge is inevitable. Hagen steals the Nibelungen-treasure to sink it in the stream and manages to kill Alberich and seize his invisibility-cap. Queen Kriemhild is packed of to an abbey so her son may grow up to become a prelate, but Hagen's men raid them and kill the child. She now accepts to become the wife of Etzel, king of the truly barbaric Hun nomads and invites the Burgund court nomenclature at their Danube court for their heir's baptism a few years later, but prepared a bloody conspiracy with her xenophobic brother-in-law behind her surprisingly chivalric husband's back, while Gunther accepts, hoping to avoid a far bloodier war, despite the danger for his party of knights, which materializes...

Tarkan who is a fearless and loyal warrior of Attila the Hun enters into a bloody struggle to capture the sword of God Mars which is believed to promote ownership of whole world whom possess.

Features a mustached villain, who is the leader of a Viking clan that worships an octopus god-monster. The Vikings wish to kidnap a beautiful girl to sacrifice her to their demigod, but the heroic Tarkan, aided by his dog, Kurt, is there to save the day.