A hunt for a lost city... Off the coast of Florida, Peter Gordon searches for signs of his grandfather's ship, which disappeared decades before during a search for the famed lost city of Atlantis. A stroke of luck... Roy Katz is down on his luck when he finds a small box washed up on the shore. The papers inside suggest riches beyond his wildest imagination-a real-life treasure map. A peace disturbed... In the 5 years since the terrorist Tiger attacked the US with an advanced military plane, the world has returned to peace, or at least business as usual. That peace is shattered overnight when ominous towers appear around the world. Jack Johnson returns to battle a formidable opponent. Can he once again prevail when Atlantis Returns