Mars has a dangerous hero who defies both god and man ... Rhone is an ex-soldier of mixed blood, more man than demon but with reserves of hellish power. He has led a peaceful life as a fisherman since his soldiering days and is raising a daughter, Enna. Returning home one day he finds Enna murdered -- or so he believes.

So begins Rhone's manipulation by Ducain, a demigod hell-bent on ruling the heavens. After avenging his daughter's death, Rhone grieves and isolates himself in the mountains. Ducain tells him his daughter's soul is locked in purgatory but can be retrieved ... and if Rhone also frees the titan who once defied the king of gods, Enna will live again.