Could eating less help us look younger, and more importantly, could it help us live longer? A few studies seem to show that this could be the case, but there are no conclusive results yet.

Johannes devises a plan to get Marion back – but when things goes awry, it turns out she's actually just as moved by his openness towards Sascha.

With their song "Auf das, was da noch kommt" ("Here's to what's to come"), Max Giesinger and Lotte think positively about the future. Celebrities Luke Mockridge, Michael Schulte, and Mark Forster also have cameos in the video.

Produced by The World Wildlife Fund WWF. Anton Reyst travels to Hudson Bay in the north of Canada to get a firsthand look at the effects global warming has had on the landscape and wildlife there.

While Sascha's parents continue fighting, he lays out his Christmas list. At the shop, Johannes plots to get Marion back – but it seems as though she's happily moved on.

Yara and Nico argue a bit about his plans, but in the end she agrees to help him get settled in Germany.

Produced by The World Wildlife Found WWF. Here are some more tips for reducing the amount of plastic you use on a daily basis. It's not just food that comes wrapped in excess plastic, but cosmetics and DVDs as well.

While Johannes spies on his ex-wife and her new boyfriend at the Christmas market, Sascha confronts him about the promises he made.

German singer-songwriter Mark Forster sings about feeling at home in a relationship – and wanderlust.

Produced by The World Wildlife Found WWF. Here are ten simple tips to help reduce the amount of plastic you use in your everyday life. Small actions can add up to a lot less plastic!

Sascha reveals to Johannes, who is dressed as Saint Nicholas, that his parents are on the verge of separation. Later, Johannes spies on Marion and her new boyfriend at the Christmas market.

The signature sound of Cologne rock band AnnenMayKantereit is characterized by the unique, rough voice of lead singer Henning May. In "Du bist anders," the singers express desperation over a relationship. The partner is distracted and clearly, something's wrong – maybe there's someone else?

Nico explains that he wants to change some things in his life. In particular, he is not happy being a law student.

The autumn is short-lived in Vorarlberg, and soon the mountain landscape is blanketed in snow. The ibexes are provided with feeding stations to ensure that they survive the winter.

To earn some money and help out his injured employee, Johannes visits several families pretending to be Saint Nicholas – and ends up making quite an impression.