The ocean liner Arcadia disappears at sea. Her final radio transmission – in which the crew reported seeing an old galleon – reaches World Security Patrol (WSP) headquarters, who relay it to the World Aquanaut Security Patrol (WASP) in Marineville with orders to investigate. Captain Troy Tempest (voiced by Don Mason), Phones (voiced by Robert Easton) and Marina set off in Stingray accompanied by Commander Shore (voiced by Ray Barrett).
