Idir, a fallen knight, was always compared to his superior brothers. He was expelled from the knight school because of his poor grades, and at the same time he was disowned by his father. Freed from all entanglements, Idir begins to pursue his own path that he has been searching for for a long time. It's a bond summoning technique. The art taught to him by a wandering bard was a lost ancient secret art that summons things that do not exist in the world he lives in, by bonding with the monsters he has made friends with.