Karl discovers that a fossil has been taken from his collection. He accuses Heidi and Peter—but the culprit turns out to be someone else.

Heidi and her grandfather ride a sled through the valley — it’s her first time, and she loves it! Peter, meanwhile, is having a rough time in class, and the teacher isn’t going easy on any of the students today.

Peter and Heidi are shocked to see that Karl, Theresa, and Willi have taken over their tree house. But then Heidi hatches a plan to get them out…

When Peter plans to climb a mountain to harvest snail clover, he leaves Heidi behind to look after the goats. But things don’t exactly go as planned…

The treasure hunt can begin! The two teams have been given different clues by Karl, and are now setting out on the adventure.

Heidi and Peter manage to trick Karl and Theresa into telling them where Peter’s treasure chest is hidden. They bring the chest back to the tree house. But someone has been spying on them!

Heidi runs to her grandfather in tears because she can't believe what people are saying about him. Is he really to blame for the death of Tobias, Heidi's father?

Heidi now learns the entire story from her grandfather about her father’s devastating accident. She comforts him, and promises that she will always stay with him.

Helene Fischer fans were horrified to see her being carried off stage bleeding after her accident back in June. Now she has recovered and, after a summer break, she's back on tour again.

The heute-show is Germany's answer to The Daily Show in the US. In this episode, host Oliver Welke and "expert" Tina Hausten (played by comedian Martina Hill) look at ways in which Germany isn't exactly a role model when it comes to climate policy.

As part of a segment for the heute-show, a late-night satirical TV program, presenter and comedian Lutz van der Horst visits an anti-vaxxer demonstration in Hamburg to find out why these parents do not want to have their children vaccinated against preventable diseases.

Lutz van der Horst lets his fears get the better of him at the German government's Digital Summit.

Germany debates electric cars: Can they save the planet, and how clean are they really?

Is the electric car the only way to save the planet from gas-guzzling cars? That's what politicians seem to think. But comedian Oliver Welke sets the record straight and offers a more grounded perspective...

Tonight's show once again humorously exposes the hypocrisy of the German automotive industry regarding sustainability.