Fifteen-year-old sea treasure hunter Hark accidentally retrieves an incredible artifact from the seabed - a magical sphere that belonged to the gods. The find promises not just fabulous money - power, strength, power, but, most importantly, it can save the life of Jelt, Hark’s best friend. Smugglers, scientists and religious fanatics are hunting for the sphere. Not realizing that the artifact is not a blessing of the sea gods at all... but their curse. And even Jelt, whom the sphere saves from death, inevitably changes. Will Hark risk his own life to save him once again, and what price is he willing to pay for their friendship?