Call of Darkness

Leo and Lily Williams are just a normal bundle of twins.. well that's what they thought until they were swarmed with groups of demigods- Half-Human, Half-Greek God. Leo and Lily soon realize that they belong to the same groups. But soon after they are confronted with a quest that only Half-Bloods that possess their abilities are able to complete. Will Leo survive and save the worlds as we know it or will he fail and delete the earth.