The Friac, one of the ancient tribes of Britain are being driven from their land by the furious onslaught of the Celts, horse warriors arriving from the continent with weapons of iron and a thirst for conquest. The last hope of his tribe Ontahil, is no hero nor warrior nevertheless he must face Serurta the greatest initiation of all. Ontahil travels to the desolate mist-enshrouded island of the dead. Stalked by the Terai, hunters with a taste for human flesh, he must find the immortal Shaman Kalaree, receive the blessing of the earth mother and begin his perilous descent into the underworld.