A teenage runaway gets entangled in an eccentric sea captain's obcessive hunt for a supposedly mythical sea monster.
Skipper, a 17 year old runaway, meets the brilliant but eccentric captain Elsan Tanneman, and joins him on his expedition to hunt down and kill a kraken- a sea monster most people believe does not exist- then bring the carcass back to land for the world to see. While Skipper is undaunted by the dangers that Capt. Tanneman says the krakens will pose, he suddenly finds the tight grasp of Clan Nefron harder to shake than a mass of giant, slimy tentacles. The Clan's Navy wants Tanneman's innovative ship for its own, and will do anything to get it- including planting a psychopath in the crew to foil Tanneman's expedition. Along the way Skipper and the captain's daughter Sara discover that they are part of an ancient prophecy, where they are destined to rediscover a lost utopian kingdom buried in legend. Before they can fulfil that destiny, however, they must overcome the obstacles of not only the krakens, but also of mysterious seaborne raiders that fly through the night and vanish in the light. Everything threatening Skipper and the Tannemans also threatens to start the largest sea war the world has ever known.