As a lionhearted boy who can’t wield magic strives for the title of Wizard King, four banished Wizard Kings of yore return to crush the Clover Kingdom.

Battles for ancient kingdoms are nothing compared to the battles of a classroom! Awakening from magical stasis after a thousand years, the Dark Lord Leonis suddenly finds himself in the body of a ten-year-old boy! He quickly meets Riselia, a girl confronting the Voids, creatures that have nearly exterminated humanity. Determined to uncover the mysteries of this strange new era, Leonis enrolls in Excalibur Academy, a school that trains students to fight back against these enigmatic monsters. Could the Voids hold some connection to Leonis's past?

In the wild world, human beings are small, but not humble. Whether it is Shennong and his people in the human domain, or the various clans in Beiye, they are working hard and developing vigorously in their own way. Although he will be bewitched and suppressed by the Star God, he will also launch a tenacious resistance to the Star God in order to protect his tribe, his relatives and bloodline.