|Weyard is a world governed by the fictional, ancient concept of the classical elements. All matter on Weyard consists of any combination of the four base elements: Venus (Earth), Mars (Fire), Jupiter (Air), and Mercury (Water). These four building blocks of reality can be manipulated by the omnipotent force of Alchemy, which used to reign supreme in the world's ancient past. Alchemy was sealed away in the past, however, and the world in the present age has become seemingly devoid of all magic. The force of Alchemy was prevalent in Weyard's ancient past, allowing for the development of great civilizations, but this eventually gave way to worldwide conflict that had subsided only with the sealing away of Alchemy. The keys to unlocking Alchemy, four magic jewels named the Elemental Stars, have been hidden within the mountain shrine, Mt. Aleph, which in turn has been guarded by the town of Vale at the mountain's base over the ages. Three years prior to the start of the game in the game's prologue, however, Saturos and Menardi, along with a raiding party, raid Mt. Aleph with the intent to take the Elemental Stars for themselves, but fail to solve the riddles guarding them and are driven away by the mountain's trap, a magically generated thunderstorm and rock slide.
In the present, the teenaged adepts from Vale, Isaac, Garet, and Jenna, join Kraden in his research of Mt. Aleph, but this coincides with a second raid of the sanctum by Saturos and Menardi, who are now assisted by the adepts Felix and Alex, and they coerce Isaac into giving them three of the four stars. However, before they can retrieve the final star, they are forced to escape from what is now an erupting volcano, with Jenna and Kraden as their hostages. The guardian of Mt. Aleph, the Wise One, appears before Isaac and Garet and commands them to prevent Saturos' group from achieving their goal of restoring Alchemy to the world with the casting of the Elemental Stars into their respective Elemental Lighthouses situated across Weyard. Alchemy, as the Wise One describes, is a power that can be catastrophic if misused by the people of Weyard, so it should be kept sealed as it is.
(Source : Wikipedia's article)