Fifteen-year-old Erma, heir to the Sword Saint lineage, receives the underwhelming Heavy Knight class during the Blessing Ceremony. Deemed a failure and stripped of his rightful place, he's banished. Heavy Knights are seen as having lopsided stats, useless skills, and are associated with cowardly and lazy individuals. However, Erma knows this world is actually the game he once played, and that the Heavy Knight class is, in fact, the strongest. Using his past knowledge, he begins to efficiently conquer this world.