April and Mark have infiltrated a Thrush ship sailing in the South Pacific. The ship has been involved in charting routes for submarines to smuggle contraband all over the Pacific Rim. The U.N.C.L.E. agents begin a mutiny on the ship and steal the charts with the smuggling routes. However, the mutiny results in the ship being destroyed. First April, and later Mark, wash up on an isolated island ruled over by Genghis Gomez VIII, who occasionally raids other ships. Gomez is a bit of a despot who, for some reason, proves difficult for the supposedly trained agents to handle. Things get worse when the captain of the Thrush ship also arrives on the island and, later, when Thrush reinforcements arrive.