Aoleon and Gilbert are entrusted with a mission from PAX, a wanted criminal and leader of the Martian resistance movement. He wants them to investigate the Luminon of Mars, who he suspects is planning an invasion of Earth to steal its milk cows. Gilbert has an encounter with the Luminess (the mate of the Luminon) and discovers something strange about her. The undercover duo is chased by the Royal Paladin Guard.

At Aoleon's home, Gilbert meets Aoleon's sister Una, mother Phobos and father Deimos as well as her overzealous pet Zoot. He is also introduced to Bizwat, a covert operator, and Procyon Commando, who uses his Saturn Pizza delivery job as a cover.

Gilbert then gets to visit Aoleon's school, the Martian Space Academy, where he encounters Aoleon's nemesis, Charm Lepton, and her friend Quarkina. While there, he attends a history lecture on the Martian people by Plutarch Xenocrates. After class, Gilbert and Aoleon get to do some intense training in zero-G and Gilbert is treated to a Psi-ball match between Martian Space Academy and Martian Science Academy.

Join Gilbert and Aoleon in this exciting middle-grade science fiction book adventure!

Note: This sci-fi book is part two of five. If you have not listened to Aoleon the Martian Girl - Science Fiction Book Saga - Part 1 First Contact, please listen to it first!