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

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?!

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!

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...

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

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!

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?

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?

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?

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...

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

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.

Pepe, Max, and Yara agree that there is a future for the delivery service concept. But Tarek is skeptical about the involvement of an investor.

Having been upset by Wolf again, Mark is on the verge of turning back. But Lisa talks to him, and her words seem to have an effect.

There's a bad atmosphere in the shared apartment because no one seems to have time to do any cleaning. Sebastian suggests buying a robot vacuum. But what do the others think of his idea?