Inspired by legendary mainstream manga series like "One Punch Man", the plot revolves around the life of Hel: the Grim Reaper and the all-powerful entity Death has been fired. Exiled to the mortal world, he seeks to get his job back by catching the rogue soul Rēji, a slightly senile man who has escaped death for over a thousand years. Hel will stop at nothing to take him down and will not let Gods or his part-time job get in his way.