Проснувшись в незнакомом новом месте, герой Кельвин узнал, что получил силу и способности. Взамен, однако, ему пришлось отдать воспоминания о прошлой жизни. Став призывателем, герой отправился в новый мир, чтобы творить добро. Его спутницей стала златовласая дева по имени Эфил. Получив новую жизнь и возможности, Кельвин пустился в странствия, намереваясь найти дорогу домой. На своём пути он встретит как друзей, так и врагов. Сможет ли Кельвин с их помощью вернуть воспоминания?

To prepare for reincarnation in another world, Kelvin gives up select memories from his previous life in exchange for powerful abilities, additional skill points, and an S-class summoner title. As a bonus, the goddess facilitating his rebirth, Melfina, offers him a choice of any companion to give him a head start in his summoner role. Kelvin—who has fallen head over heels for Melfina at first sight—promptly chooses the deity, confident that his passionate feelings for her will resurface even without all of his memories.

Kelvin embarks on his exciting new journey with Melfina as his guide. However, in order to summon his beloved goddess' physical form, he needs to acquire significant amounts of mana points—and the best way to accomplish this is to level up by fighting strong enemies and making contracts with even stronger companions.

[Written by MAL Rewrite]