Undead summoner Lenora is fired after her life summon dies, only to summon John, a seemingly weak FFF-level zombie who is actually a powerful Zombie King with SSS-level skills. The pair rises to glory by winning the National Mentor Assessment, only to be framed by Vice President Cain and the Zhao family. Lenora takes charge of the worst Class 6 at the L University and leads them to victory. But during a dangerous instance mission, they fall into a deadly trap. John unleashes his Zombie King form to save them, only to lose control, until Lenora's kiss brings him back. Their deep bond paves the way for greater adventures to come.