No matter what kind of trouble occurs, a cheat skill that can solve it is automatically summoned, and the summoned person can solve it without knowing it [Fully automatic / eirei summon]. Frey, a young man who inherited such strongest skills, worked in the Black nation, but was caught up in a faction battle and was banished. He finds a place in the magical underdeveloped country that he has reached and develops the country, but eventually he is involved in a big battle that he does not even know ... But it is not a problem because it is fully automatic and summons spirits!