The young man who died in the accident of God's mistake was reincarnated in another world as "Kelvin" by the contract with the goddess. In addition to the abundant initial skills gained in exchange for memories and memories before reincarnation, Kelvin, a "summoner" who is a rare occupation whether or not he is alone in the country, is an adventurer with the goddess Melfina who controls reincarnation. Open a new life as a person.