Guts, a former mercenary now known as the Black Swordsman, seeks revenge. After a turbulent childhood, he finally finds someone he respects and believes he can trust, only to have everything collapse when this person takes away everything important to Guts to fulfill his own desires. Now marked for death, Guts is condemned to a fate in which he is relentlessly pursued by demonic beings. Setting out on a dreadful quest riddled with misfortune, Guts, armed with a massive sword and monstrous strength, will let nothing stop him, not even death itself, until he is finally able to take the head of the one who stripped him—and his loved one—of their humanity.