Bill Marks is a burned-out veteran of the Air Marshals service. He views the assignment not as a life-saving duty, but as a desk job in the sky. However, today's flight will be no routine trip. Shortly into the transatlantic journey from New York to London, he receives a series of mysterious text messages ordering him to have the government transfer $150 million into a secret account, or a passenger will die every 20 minutes.
A decade after his heroic defeat of the monstrous Kraken, Perseus-the demigod son of Zeus-is attempting to live a quieter life as a village fisherman and the sole parent to his 10-year old son, Helius. Meanwhile, a struggle for supremacy rages between the gods and the Titans. Dangerously weakened by humanity's lack of devotion, the gods are losing control of the imprisoned Titans and their ferocious leader, Kronos, father of the long-ruling brothers Zeus, Hades...