The plot of Knights Contract is set in the era when witches were hunted by good society. The action proposes to follow the adventures of Heinrich, a cursed witch killer, and young Gretchen, the reincarnation of a witch whom Heinrich once beheaded and who took revenge on him by damning him for eternity. When unspeakable evil and a deadly threat descend upon the earth, Gretchen refuses to lose her life a second time prematurely.
She decides to face the danger by using Heinrich the damned wisely. Thanks to the latter's formidable execution skills, she hopes to contain the bloodthirsty madness of the enemies they now have in common.
Of course, the task will not be easy and blood will have to be shed for order to reign again. Armed with a sharp scythe and exceptional sorcery skills, you will struggle to survive in a twilight world, and every enemy, human or supernatural, who gets too close to you will have to learn that their true place is six feet under.