A young man's life changes after his family were slaughtered by the King of the Undead. Since then, he was captured and taken as slave for the Undead. He fortunately escaped and decided to get revenge on the Undead but needed to figure a way to become strong enough to defeat the king and his army. So he needed to become an Undead Hunter (a monster hunter that hunts down the undead) by finding a mentor to do so.