In a world where magic reigns supreme, Rudy was born with zero magical power and desperately tried to make a living as a swordsman. One day, he is expelled from the A-rank party he belonged to. However, he reunites with his childhood friend, who has grown into the strongest female mage. After this reunion, Rudy begins to instantly kill A-rank monsters and defeat the party leader who expelled him... his true strength is recognized by those around him.