Batman and Robin,in their Bat-Plane,head far out to sea in pursuit of the pirate Blackjack's submarine. A storm arises, buffets the Bat-Plane, and causes its engine to conk out. They land on the plane's pontoons and drift for a day. Finally, on the horizon, they sight a legendary scene: the Sargasso Sea, a morass of seaweed entangling over a score of ships from ancient times, with a cloud of mist hanging heavy over it. Drifting in closer, Batman and Robin are bade welcome by an English ex-pirate, Jolly Roger, and his cohorts Erik of Norway and Flavius of Rome. They explain that strange mists from the seaweed keep them alive and unaging, and even their clothes do not wear out. In their Sargasso colony, all wars and hatreds have been forgotten, and they live in peace. That is, until Blackjac