Season 1

Adol Christen, a young man from the mainland, sails to the besieged land of Esteria in search of adventure. Esteria is being overrun by beasts under the control of the evil priest Dark Fact, and the people of the land are running out of time. However, there is a prophecy that tells of a hero from another land who will come to save Esteria -- and his name would be Adol Christen.

After being advised by the fortune teller Sarah, Adol travels from Midien to the villiage of Zeptic to seek out the elder Zaben to help him on his quest to rid Esteria of the monters which plague the country. He discovers that he must venture the the Shrine of Solomon to retrieve the Huddale, one of the ancient books of Y's. Once there he discovers something that will change his life forever...

After Rescuing Feena and the book of Huddale from the clutches of the guardian of the Shrine, he discovers that he has lost all memory of who she was before she was captured. While Adol spends time with Feena, Sarah is attacked in Middleton by a group of evil wizards and is turned to stone. Later they discover that the wizards were after another book that she possesed called the Tovah.

In his dark fortress, Dark Fact is seen speaking with Dalles. Dalles informs him of Adol, but Dark Fact blows him off, stating he doesn't believe in "moldy old legends." One of Dalles' familiars enters the sanctuary and informs the wizard that Adol has journeyed to the Mines of Rastin. Dark Fact wonders how he would know to go there, but doesn't worry because his guardian, Vajullion, should be able to handle a single warrior. Elsewhere, Feena is seen praying to the goddesses when she is struck by a vision of a statue of the older one that looks exactly like her. Frightened, she flees the temple, both wanting to know who she is and simultaneously fearing that knowledge. Meanwhile, deep in the mines, Adol is accompanied by his friend Dogi. The two fight their way through a number of skeletons. After the fight, Adol tells Dogi that Reah asked him to try to find her silver harmonica which she lost in these mines years ago. The two continue on, but soon run into some human-like soldiers. During this fight, they punch a hole in the ceiling and the mine begins to flood. The two are washed through the mine, down to its lowest level. There, they find an underground shrine. They enter and are immediately attacked by the demon Vajullion. After a lengthy battle, the two defeat the monster and claim the Book of Dabby, along with Reah's silver harmonica. The two return to Zepik and return to Leah her silver harmonica. As soon as she touches it a flood of memories hit her. She thanks Adol and offers to play him a song, which in turn restores to Feena her memories as she cries outside the temple. Remembering everything, Feena has a look of worry on her face...

In the Tower of Darm, Dark Fact realizes that the goddesses have returned. Elsewhere, Adol meets back up with Goban and asks about the Tower of Darm. Adol is convinced the remaining books are there, but Goban tries to dissuade him from going there. Adol decides to drop it for the night and goes to bed, but is visited in his dreams by a being called Roda. He asks Goban about it the next morning and is told Roda is a tree with a soul that houses the memories of the goddesses. As they talk, Dogi arrives and informs them that Luther has gone missing. Immediately Dark Fact appears and informs Adol that he has captured Luther, along with the Book of Messa. Dark Fact challenges Adol to retrieve it from an abandoned temple in the nearby forest. Adol accepts and the party sets out. Meanwhile, Feena and Reah, now with their memories restored, decide it is time to "awaken." Cutting back to Adol and his party, the trio journeys to the Tree of Roda. There, Roda recounts the history of Esteria and the metal claria. Claria, it seems, is a type of silver that has magical properties, but also has the drawback of summoning evil to it. It can, however, do great damage against evil beings. Roda then bestows upon Adol an armor of Cleria and tells him to recover the remaining three books. The group moves on to the old temple and are attacked by a giant praying mantis (called Pictimos in the game). Elsewhere, Jevah discovers that Feena is one of the goddesses, as she disappears into the night in order to hook up with Reah and fulfill their destiny. Back at the temple, Adol defeats the giant beast and recovers the Book of Messa. As he looks at the cover, he comes to the realization that he can now read the ancient text.

As the goddesses fly towards the Tower of Darm, Dark Fact and Dalles discuss the nature of evil. Dark Fact contends that wherever there is good, there must be evil and good will never be able to fully overcome the darkness. Dalles agrees, then attacks the two goddesses as they are some distance off, capturing Reah. Back in the forest, Adol decides it is time to go to the Tower of Darm and is accompanied by Dogi and Goban. They enter the tower and are immediately in combat. Meanwhile back in the village, Slaghf futily argues against disbanding the army. Most of the villagers believe that the monsters are gone and that Adol must have already succeeded. In actuality, Dark Fact withdrew his forces hoping for that conclusion and plans to attack later that night. Back in the tower, Adol becomes separated from the others when he is sucked into a mirror, but finds Luther. Luther tells Adol the names of all six priests, including Fact, and how Dark Fact was once one of the most devoted followers of the goddesses, but was corrupted by the Cleria. He then tells Adol about the legend in detail of the hero who will save the island. When he finishes, Luther gives Adol the Book of Gemma and the two continue on through the tower. They soon are reunited with Dogi and Goban and fight through the floors. Eventually they encounter a snake-like rock monster (called Khonsclard in the game). Adol utilizes the power of the Cleria to defeat it, but once it is destroyed Luther, Dogi, and Goban vanish. Adol is left alone, but the voice of Feena urges him to press onward and tells him the way to the top of the tower.

Dark Fact's army begins their assault on the remaining human settlements as Adol continues up the Tower of Darm. In his throne room, Dark Fact tells Dalles that he turned to evil because he feels that humans do not deserve to be saved. Below them, Adol reaches the second highest floor. Feena tells Adol to touch one of the mirrors in this room to teleport to the throne room, but before he can Dalles appears and attacks. Adol defeats Dalles, who is apparently vaporized, and continues on. He finds Reah and saves her, allowing her to return to her sister. The two goddesses then teleport to another section of the tower where Dogi, Luther, and Goban are and thank them for all they've done. The five then teleport to the throne room and confront Dark Fact. Dark Fact accuses the goddesses of causing all this evil by giving humans the Black Pearl, the artifact that allowed them to harvest Cleria in the first place. Goban and Luther step up and argue that it is human mistakes that caused the evil, not the goddesses. Dark Fact laughs and teleports out of his throne room, saying he must go fight Adol and doesn't care about the rest of them. On top of the tower, Adol and Dark Fact battle while below the goddesses destroy Dark Fact's throne and reveal the Black Pearl. They sacrifice themselves in order to destroy it, which instantly kills every monster on the island. Back atop the tower, Dark Fact realizes this and drops his sword. He tells Adol that the world is saved and that good has triumphed. He then asks Adol to kill him as that is want he wanted as well, and if he is not killed than the darkness will force him to continue to fight for evil. Adol hesitates, but then kills Dark Fact, prompting the priest to thank him before he expires. The final tome, the Book of Fact, appears and Adol claims it. The six books light up and their power destroys the vortex around the island, restores Sarah, and teleports Adol to the floating island of Ys...