Contracts with the devil. Something not even the most wicked of the evil should do. Even so, they decide to sell their soul for power. The last contract was made hundreds of years ago, there hasn't been any since the great spellbinding war. In this war, the devil himself was sealed until the ends of time. Recently, in the depths of hell a crack has appeared, allowing Demons, the people who traded their souls for power to escape to our human world. Luckily, clans, descendants of the participants of the great war, were gifted with the power of spells. Spells are a sort of magic themselves which allow spellbinders to bind these demons back to the deepest pits of hell.