A Roman centurion who had died in battle is resurrected from the dead by Zeus. The centurion is ordered by Zeus to save his daughter Athena from a Demon God called Neff in the Underworld. To become able to withstand the perils, the warrior gets the ability to absorb spirit balls which transform him into an Altered Beast, a part animal, part human creature of formidable force. Between each level are small animations giving the player glimpses of Athena's peril. He first travels through the graveyard fighting past zombies and winged demons. The centurion becomes a werewolf in order to fight Neff in the form of Aggar. The centurion defeats him, but Neff escapes.