Billie, 12 years old, and her mother Mira, are picked up from Earth by the tough space pilot Pax. Meanwhile, the evil Triumvirate sends the ruthless Fifun Captain to blow up Peo's little joint.
Peo is floating around in a small emergency capsule where the air is running out. And the evil Triumvirate puts their big plan into action, and a giant construction starts on the black asteroid.
The expedition arrives at the trading station, where they met Benke's enormous sales force. At the same time, the ruthless Fifun captain arrives, and the whole thing develops into a breakneck hunt through Benke's enormous warehouse.
The conflict with Mira is getting more intense, and Peo has to do something about it. While the evil Triumvirate receives the sloky Fifun captain and sends out a new expedition to find Peo.
Mira gets a shock when Billie is assigned to land on the barren planet of Ürgüp to search for the Count's palace. And Pax skillfully lands the ship in the crater of a giant volcano.
Billie and Peo arrive at the huge rock city of the mysterious Stor-ürgüpen. It will be a charged encounter as it is still uncertain whether the honking creatures are friends or foes.
On the forest planet, Mira and Pax are drawn into the fuzzy Captain Zoom's ceremonies. At the same time, Billie and Peo search deeper and deeper into Ürgüp's enormous cave system.
Mira and Pax's fragile friendship crumbles. And a huge betrayal has dire consequences. When the expedition leaves Ürgüp, one of the members remains, surrounded by fufas.
On the black asteroid, Mira begins her new life in the service of the evil Triumvirate. While Peo struggles in Broschnyj's shipyard to get his plan to free Mira off the ground.
Billie and Peo break into the Triumvirate headquarters on the black asteroid. And together with Captain Zoom, everything leads to a charged showdown in the generator hall.
