謎の古地図の力で異世界に召喚された高校生・清川ヒロト。彼を召喚した領主に吸血鬼退治を命じられたヒロトだが、彼が選んだのは「吸血鬼やミイラ族など異種族の力を集めて国を興す」という奇想天外な道だった――! Accidentally summoned by an ancient map, first year high school student, Kiyokawa Hiroto is forced by the arrogant Lord of the castle to exterminate the vampire that has been haunting his castle. Unexpectedly befriending a girl from Mummy tribe, Hiroto skillfully managed to capture the Vampire with her help. However, he is soon framed by the Lord of the castle. Bravely and kindly aiming to be a Lord, the fantasy of summoned to another world starts!