In Easy Come, Easy Go, his last film for Hal Wallis, Elvis Presley stars as Navy frogman Ted Jackson, who is about to be discharged from the service. On one of his last dives, Ted discovers a treasure chest on a sunken ship. Captain Jack, a local expert on nautical lore, is unable to tell Ted the exact treasure or cargo of the ship. But Captain Jack does reveal the name of the only descendant of the ship’s captain. Ted tracks down this descendant — a vivacious young woman named Jo Symington, played by Dodie Marshall. Jo believes the chest contains pieces-of-eight. She agrees to help Ted if the money is given to the community arts center. Their attempts to retrieve the treasure are impeded by scoundrels Gil Carey and Dina Bishop.
Carey and Bishop steal Ted’s equipment and kidnap Captain Jack, but Ted tracks them down and rescues Jack. When Ted opens the chest, he discovers that the coins are copper, not gold. Ted donates the money for a down payment on a new arts center, winning Jo in the process.
The story was written by Allan Weiss, who had written the scripts for five other Elvis movies. This film centered around Elvis’ character Ted Jackson, a former Navy diver who helps a free-spirited woman find a lost sunken treasure. Elvis, as marine-diver this time, searches for a treasure together with dancer Joe Symington (Dodie Marshall). But his final treasure is the dancer.