We have heard about many kinds of creatures with supernatural powers. Succubus is a female demon who is known for seducing people, while a werewolf is a human with the ability to shapeshift into a wolf. As folklore explains, they have become like that either purposely or after being placed under a curse.
And it may seem that they are comfortable in their bodies, but not, it is not like that. You will get to know the truth about two creatures of this kind. Sayona is a succubus, and Farkas is a werewolf now, but they were regular people before they got cursed. They look for a way to lift their curse and return to their normal human bodies. It seems that the only way they can do so is through the magical items that lie in the forsaken caverns.
Those caverns are known as the Caverns of Fire and Sayona and Farkas are daring to enter there and find the needed objects. This is not something that anyone can do, but the motivation of those two is very big. They will do anything, to bring back things as they were before.