It tells the story of the artisan students of a Shinigami Technical School. Everyone has a different weapon, which is also their partner. All students and guns go to class and have homework to do. Homework usually consists of capturing a certain soul or keeping peace in the world. Each crafter tries to help their companion and weapon as best they can, to make it become a "Death Scyte" and to do so the weapon must eat 99 Kishin eggs and the soul of a witch.