A French string quartet traveling from San Francisco to their next engagement in San Diego, is diverted to Standard Island. Standard Island is an immense man-made island designed to travel the waters of the Pacific Ocean. The wealth of residents of the island can only be measured in millions. The quartet is hired to play a number of concerts for the residents during their tour of the islands (Sandwich, Cook, Society, etc.) of the South Pacific. The island seems an idyllic paradise; however, it is an island divided in two. The left half's population is led by Jem Tankerdon and is known as the Larboardites. The right half's population is led by Nat Coverley and is known as the Starboardites. Despite the obstacles encountered on their journey, the two parties have a disagreement that threatens the future of the island itself.