Johannes, Sascha, and Marion are having a great time together at her apartment until her new boyfriend shows up unexpectedly – with plans to propose to her.

Marion spends a nice day at the sea with Johannes and Sascha, and is impressed at how well Johannes gets along with the boy. Then Sascha asks if they can bake cookies together.

As the 30th anniversary of the fall of Berlin Wall approaches, this report takes stock of how far Germany has come, and what still needs to be done. Emphasizing the importance of transparency and freedom of speech has helped reunite the nation – but other divides have also emerged.

Former civil rights activist Roland Jahn and photographer Andreas Rost both played a role in the resistance and fall of the Berlin Wall. Thirty years later, they recall some of the crucial moments from a period in recent German history that was characterized by both unity and division.

Throughout his life, Luigi Colani designed cars for Fiat, Alfa Romeo, Lancia, Volkswagen, and BMW. In this interview, the late designer discusses his disappointment with current design trends and a lack of innovation, and German politics as well.

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.

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.

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

Johannes asks his new employee, a psychology student, about love and relationships – but doesn't particularly like the answer he gets in return.

Petri's colleague is arrested, and Petri and his wife make amends. It's time for Julius, the young runaway, to say goodbye to Harry and go home – but Dirk has one last surprise.

While Dirk bonds with the young runaway, Katja figures out what actually happened at the Harms company.

Konstantin, the new temp worker at the pet store, wonders why he's even needed considering how little money the store is making. Meanwhile, owner Johannes uses the store's problems to try to bring his ex-wife Marion – who also happens to be his neighbor – back into his life.

Katja and Dirk arrive in time to stop Mr. Petri's madness and bring him in to the station. Meanwhile, Lothar finds out the truth about their supervisor.

Germany is not a big enough country to devote all of its land to creating renewable energy – but there is another place with vast expanses of empty space and limitless sunshine.

Henning finds a potential lead regarding the runaway boy's identity, while Petri turns up at his former workplace yet again – this time armed.