Rann is the home planet of the scientist Sardath and his daughter Alanna. The dominant species is a technologically advanced yellow skinned humanoid race known as Rannians. The capital city of the planet is Ranagar.
After bribing a member of the Science Command, Kroloteans used the jungles as a base for one of their ships. They started stealing equipment from Sardath, an expert on advanced Zeta-Beam technology. When Sardath investigated the theft, Adam Strange was accidentally transported to the planet.
In his lab, Sardath explained the thefts, and a way to stop the Kroloteans. He conducted his research while the others sought out the Krolotean base.
To avoid a routine ID check by the Science Patrol, Adam strange left the group and traveled back to Sardath's lab. The others found the Krolotean base, actually a spaceship. They were discovered and pursued through the jungles of Rann.