Adol is flown to the floating island of Ys by the twin goddesses, Feena and Reah. After a violent arrival, he sees a bunch of monsters, and passes out. When he comes to, he awakes in the Doctor's office in the village of Lance with all his equipment and armor are gone except for the six books of Ys. His injuries have healed, and the doctor, noticing the books, comments about the mine. A young girl by the name of Lilia (Lilian in the English dub) tells about the abandoned mines of Rastini, and how she found a shrine in there. She offers to guide Adol, but he declines her offer, claiming it to be too dangerous. He travels off, but before he leaves, a villager named Sada gives him a sword. While Adol's in the mines, he falls down a chasm, and ends up in the shrine he was looking for in the first place. At the same time, a group of monsters arrive in Lance Village to select the next human sacrifice. At the last moment, Lilia shields the intended victim and is chosen as the sacrifice. Despite the objections of her mother Banoa and the other villagers, Lilia goes with the monsters of her own free will. Deep in the underground Shrine of Toal, Dark Fact appears before Adol. Instead of the evil sorcerer terrorizing Esteria in the previous OVA, he has reformed to the side of good, and gives Adol some more backstory about the Black Pearl. He then gives Adol the power of the Six Priests, enabling him to use magic. When Adol returns to Lance Village, he finds out that the villagers have been offering human sacrifices to monsters to maintain peace. When he finds out Lilia's going to be the next sacrifice, he's determined to rescue her, much to the chagrin of the village elder. He reaches Lilia, who by that point is willing to sacrifice herself for the good of the village. Adol charges in and starts attacking the monster who's in charge of the sacrifice, Velagunder. Velagunder tosses Adol aside easily, and destroys his sword. Adol hears Fact's voice, and uses a fire spell against
ダームの塔に於いてダルク・ファクトに勝利したアドル。「行け、アドルよ。お前の使命はここから始まるのだ……」ファクトの言葉とともに光に包まれ天空高く飛ばされていく。行き着いた先は天空に浮かぶ地「イース」。だがそこは、魔物が神のごとく振舞う荒廃した地であった。リリアによって助けられ、たどり着いたランスの村は、魔物を恐れ生贄を捧げることで生き長らえてきた。だが頻度の増す生贄の要求に、村民の魔物に対する不満が高まっていた。他の少女を庇い生贄として連れ去られたリリアを救い、魔物に逆らえることを証明するため、アドルは単身魔物の巣窟へと向かう。新たに手に入れた魔法の力を駆使しリリアを救って村に帰還したアドルであったが、「悪魔の教えを語る者」として捕えられてしまう。
