"Fairy Oak is an old magical town that has sprung up around Roble, the great enchanted tree that gave it its name. In Fairy Oak, the magicians of Light and Darkness have sealed a pact with the synmagic and live in harmony with them. But the time of peace seems doomed to end, as an old enemy has returned for revenge. The Lord of Darkness wants to rule a world in darkness and his power grows stronger every day. The ancient alliance between Light and Dark of the same blood. On that bond the enemy will unload his ax. Could Periwinkle resist the allure of Darkness? The salvation of the magicians and the sinmagic of the valley depends on it"--Adapted from publisher description.