The only thing that can stop the future Grimm Reaper from becoming an unscrupulous and cruel angel of death is an uneasy friendship with a human boy who was brought back to life solely for that purpose. It's a thankless job, but Max is determined to accomplish his mission - after all, the fate of all humanity depends on his ability to positively shape the character of his only, best, and deadly friend. About two hundred years ago, humanity was dominated and slaughtered by demonic legions from hell, who robbed the people of their very ability to die. Caught in an endless cycle of torturous life and enslavement with no hope of freedom, the Grimm Reaper, the only human with the ability to take lives, emerged as a hero.  Time has passed, and although humanity has slowly gotten back on shaky legs, the future is still uncertain as the New Grimm Reaper is but a reckless and violent teenager who seems to lack her Mother's empathy for the mortal life...