Adol sails to the Canaan Islands after being attacked by the Roman army and falling into the sea. He is rescued by Olha and Isha, two girls from the Rehda tribe who live on a remote island cut off from the outside world. Adol gradually uncovers the secrets of the so-called Ark of Napishtim – an ancient technology from a lost civilization – while facing enemies who seek to use its power to destroy the world.