The bus finally reaches the hut which is to be their base camp. Mark reluctantly allows himself to be helped off the bus by one of the convicts, and Lisa discovers that Rosi is anything but well-equipped for the trek up the mountain.

The crew of Starship Hummingbird are doing everything they can to make contact with the unidentified flying object. Will they be successful?

Martin, Lisa and the boys are now on the bus headed for the mountains. Mark makes himself unpopular again, and then it turns out that they have a stowaway on board...

Now things are getting serious: The crew is getting ready to launch, and the two young pilots are eager to go along for the ride. Will they be able to persuade their fathers to let them?

Pepe and Max present their idea of a delivery service to Yara. She is immediately interested, but the details still need to be discussed first. Will the three of them end up in business together?

Martin's boys get into a fight, which threatens to derail the whole expedition to climb Gran Paradiso. Will Lisa manage to calm everyone down?

The new recruits of the Milky Way security force arrive for training. Pierrette is worried about Fat Nose's threatening behavior. Meanwhile, the UFO enters the ship's observation space. This calls for immediate action!

Nico's friends are watching an important soccer game when he comes into the café and tells them about his troubles with Selma.

Martin chooses three boys to go on the mountaineering expedition, and Rocky, at least, is immediately enthusiastic about the idea. However, Martin withholds one important detail from them at first...

The representatives of the confederation, chaired by the President, are now to vote on how to deal with the unknown flying object. There is no consensus at all!

Nico discovers that it was Pepe who told Selma's father about the two of them. Although it wasn't Pepe's fault, Nico is still mad at his brother. How could he be so clueless?!

An unknown flying object appears on the radar. Pierre, Pierrette, and Maestro discuss where it might come from and whether it might be hostile.

Lisa asks a friend from her university days for help, but he is not enthusiastic about her idea to organize an expedition up to the Gran Paradiso.

Pierrot and Dickie have completed their training as spaceship pilots and are now looking forward to new challenges. Soon, the two arrive for their first mission, which is to identify an unknown flying object.

Pepe is jogging through the park and talking to Selma's father on the phone when he suddenly happens to catch sight of her with Nico. Amused by the coincidence, he mentions it to the father in the phone call. What could be the harm in that?