This swashbuckling costume film stars Douglas Fairbanks Jr., Maureen O'Hara, Walter Slezak , and Anthony Quinn. Surrounded by friends ,regales his audience with a tale of his daring in exotic lands. In this particular adventure, his ocean journey with sidekick Abbu pauses in remote Daibul , where nefarious auctioneers commandeer his ship. A bidding war erupts between rightful owner Sinbad and the feisty, resolved only through a bit of Sinbadian sleight of hand. Meanwhile, the powerful Emir notices Sinbad's attentions towards the headstrong Shireen, who saves the sailor's life before being captured by the Emir. This time salvation arrives in the form of Eastern sailor Melik ,who enlists the couple's aid in tracking down the elusive treasure of Deryabar, located beneath the palace of Alexander the Great. Loyalties and vows shift as the trio races to the treasure with the furious Emir hot on their heels.