Lu is battling a severe case of the hiccups that simply won't go away. Jo and Naya try to help and come up with lots of ideas.

Anton, the son of the ship's captain, comes to stand up for Niklas. But the police are not convinced of his innocence until Luis draws the policeman's attention to something...

The three friends are still trying to find a way to get rid of Lu's hiccups, and they come up with a new idea...

In this segment, we get to know other creatures living in the Feldberg lakes and learn who the "grandmother" is.

As a train passenger, you can usually sit back and relax on the 791 kilometers (492 miles) of track between Munich in the south and Hamburg in the north. Not so on this evening, when a storm brings train services to a standstill and forces many travelers to rethink their plans. Four completely different personalities find themselves sharing a cab...

In the third part of this series, you will get to know the third group of verbs and learn about the importance of intonation.

Luis wants to catch the suspected thief, but his mother prevents him from doing so. Nina is upset by Max's behavior and Max's grandma tries to comfort her. Jada turns up at Jessi's family's home and has a proposal...

This video gives you the chance to test which fruits you know in German. How many can you guess correctly?

Silbermond is a German pop rock band from Bautzen, Saxony. Singer Stefanie Kloß wrote the song "In meiner Erinnerung" about her father, who died when she was young. This video shows the band recording the song in France.

Lu has landed in a spider's web, which gives Scotty an idea ... Then Caruso the frog appears and turns out to be Lu's savior.

This part is about the offspring of the various inhabitants of the Feldberg lakes. How do the parents behave after the mating season? How dangerous is life for the various species, and how do they protect themselves?

In this segment, we find out that the thieves are in a very desperate situation. Meanwhile, Nina is heartbroken, and Max doesn't know how to face the fact that she's leaving town. Additionally, Jessi is annoyed with Luis, who is now spending all his time with Ceyda, the girl from the ferry.

Caruso has an idea: Maybe singing will help against the hiccups. The three friends are happy to give it a try.

A few very special insect species can be found around the Feldberg Lakes. Otters and other water creatures also live here, and the full moon seems to have a special effect on them.

Luis can't stop thinking about the case. In the morning, he has found the solution... In the meantime, father and daughter set about retrieving the loot from the ferry.