The Callisto Group has finally made it back home. Alicia finds that a lot has changed while they were away, and they begin work right away to fix these problems. A big surprise is finding kids from Earth...

Life has become challenging on Callisto Station. The agricultural sections are turning brown, and the inhabitants begin to grow ill. JJ realizes that desperate measures are required. The remedy requires...

Everything is changing: new apprenticeships, new training. The Callisto Group is finding more responsibilities trust upon them, and less free time. Then they discover a comet streaking toward the station.JJ...