The Callistos are on a mission to connect the universe. Explore the galaxy on the Stellosphere, the home base space station for the Callistos, where they relax, recharge and receive new missions from the TTA. The Stellosphere comes apart into 3 separate ships to make space explorations easier. Open up the large Stellosphere playset to reveal the Callisto's command center where Miles and the Callisto Family (figures sold separately) can receive missions from the TTA. For short, quick missions, take the mini StarJetter that is stored in the Stellosphere. For longer missions that require a greater distance to travel take the Zip Ship that can be removed from the top of the Stellosphere. To boost any ship with lights and sounds remove the XVR system from the bottom of the Stellosphere and attach to the other ships. With that many ways to explore, no mission is too difficult.