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?

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!

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

After spending years in prison, Mr. Lehmann is up for retrial. Andrea's husband is acting as his lawyer now – will there be a new outcome?

Ms. Bredow comes to have dinner at the house of Ms. Lorenz, who is still in the process of moving into and decorating her new apartment. Away from the office, the two colleagues begin confiding in each other.

Ms. Bredow confronts Mr. Lehmann about his inappropriate remarks toward the new colleague, but he accuses her of professional negligence. Ms. Lorenz takes Ms. Bredow’s side.

It’s Judith Lorenz’s first day at the Hanover Health Department. Her new colleagues approach her openly and with interest. But Mr. Lehmann makes an inappropriate comment to her at the very first chance he gets.

All's well that ends well! Rosa admits to having made up everything in order to get her father's attention, which means Henning can be reinstated; meanwhile, Lothar finally cracks his case.

Dirk, Harry, and Katja speculate about why Rosa would make up such an extreme story about Henning. Henning himself wants to confront Rosa, but Harry stops him; meanwhile, Dirk and Katja pay Rosa’s absentee father a visit on his ship.

Katja and Dirk confront Henning regarding Rosa’s accusation. Meanwhile, Lothar tries to follow up on his internal assignment without his colleagues noticing – but then Nicki catches him in the act.

After learning what Henri and Emma have uncovered in their investation, Hannes realizes the truth about the origins of the tea Debbie sold to them. In the meantime, the maintenance technician hurries over to fix the elevator – but maybe it wasn’t such an emergency after all. See for yourself!

At lunch, it becomes clear that Debbie is actually a pretty shady character. Meanwhile, Henri is kidnapped, and Nina and Max finally have it out in the broken elevator…

When Henri notices that his Geiger counter has gone off, he quickly alerts Emma. Emma’s convinced it’s just an old piece of junk, but when Debbie sees what’s going on, she makes a suspicious phone call. Meanwhile, Max is still refusing to talk to Nina.

While cleaning out the headquarters to find items to bring to the flea market, Henri digs up an old Geiger counter. Meanwhile, Hannes’s ex-girlfriend Debbie shows up and starts behaving inappropriately, and Nina doesn’t understand why Max still won’t talk to her.