Brandon, a passive man, lives a laid-back life until his friends are murdered. He joins the mafia to be near Maria, the woman he loves, enduring hardships but willing to risk everything to be with her.

Gungrave follows the story of best friends Brandon Heat and Harry MacDowell as they join and rise in the ranks of Big Daddy's Millenion crime syndicate. The story begins in the future revealing Brandon Heat has become a creature now known as Beyond The Grave killing monsters with two very large guns and wicked looking machine gun on his back and that Harry MacDowell is now the Boss of Mellinion and has become a cruel leader who has earned himself the nickname Bloody Harry. The story strafes between the past and the future to reveal why Brandon has become a non-talking monster killer and the series of events that caused Harry to become so evil.—Clinton Kittrell

Gungrave takes place in an undisclosed town that feels and looks like somewhere in Europe. The series focuses on a group of friends that tries, by committing petty crimes, to earn enough money and to perhaps, one day, become high in the social scale. However, the world of crime is very cruel and it will wait patiently to find a good opportunity to crush you once and for all. Sooner or later the two protagonists will have to pay for entering this cruel domain; they will pay a very high price, but, in the end, they will find a way out. The group of friends, of brothers, achieves their dream and they become members of an influential mafia organization. This organization is powerful enough to control everything. Gungrave is a story of how power and influence change people.—Scientiiaa