Olivia was a lone monster subjugator who refused to take on an apprentice until she rescued a young Beastkin named Noah. Now, they look out for one another in an often brutal world. Despite the dangers they face, the two at times find beauty in their shared journey. As Olivia teaches Noah the art of battle, he teaches her how to enjoy life's quieter moments. But can a boy with such a tender heart live up to his apprenticeship when faced with terrifying foes?