Depois da última Onda, Naofumi, Raphtalia, Filo e Rishia se dedicam a restaurar o vilarejo de Lurolona antes da próxima Onda. Quando alguns monstros surgem, Naofumi percebe que a contagem regressiva parou.

Naofumi derrota diversos familars para proteger a cidade em que está e acaba encontrando uma mulher misteriosa. Mais tarde, em uma reunião com autoridades de diversas nações, essa mulher surge mais uma vez.

The Spirit Tortoise begins its march once more, appearing at the border of the kingdom bearing its name. Naofumi volunteers to lure away its familiars while the army tries to bring it to the mountains. The Spirit Tortoise’s familiar, Ost, fights alongside the humans…

Naofumi acaba visitando o interior do Espírito da Tartaruga e reencontra rostos conhecidos.

Naofumi is met by L’Arc, Glass, and Therese. They’re after the person who broke the Spirit Tortoise’s seal and is controlling it. L’Arc proposes teaming up again…

Fitoria appears when the Spirit Tortoise revives, and with her help, Naofumi attempts to destroy its heart and cut off its head at the same time. L’Arc arrives as well, but all of them are helpless before Kyo’s overwhelming power.

Naofumi’s party heads for the Dragon Hourglass of Mikakage, in order to get to Sikul, the country that summoned Kizuna. Along the way, he sells rare healing items to make a hefty profit. He hears a rumor about a genius mage…

Raphtalia recalls having to buy clothing for her smaller self. Kizuna remembers being alone for so long. Rishia remembers Ost trying to give advice.