In a not distant future

Kein Maxwell, the last descendant of a lineage of professional killers, is the leader of a secret team of assassins. Working undercover for the department of defense, take care of the dirty work. The Orion inc., a multinational at the service of the department, is creating problems, culminating in a deadly feud. Kein Maxwell and his team will have to fight a secret battle with the Orion inc., between earth and space.