Previously released as Treasure, Once Upon a Caribbean Summer follows the story of Dr. Christina Alvarez, a nautical archeologist on the hunt for her ancestor's sunken treasure ship. Determined to achieve her goal, Christina has traveled to the island of Robert's Foe, where treasure hunter Mitch Crawford - the one man who can assist her - refuses to help. But Christina's fight to win Mitch over may lead them both to a treasure more valuable than either one of them dreamed.