Lona tries to learn more about the victim and how the body was discovered, and Elling learns that his wife couldn't have met with her intern that day, as according to a colleague, he was sick.

Arthur now questions Christa Hartmann more thoroughly. Marlis and Gerd find themselves in a severe conflict. Their different views on future and responsibility put their relationship to the test.

Elling arrives at the crime scene. The criminal police investigators exchange initial observations, clues, and theories about how the crime unfolded.

At the gruesome crime scene, the investigators find clues regarding the murder's motive, including something very disturbing about the victim.

For Chief Inspector Frank Elling, it's a relatively normal morning. But a strange case awaits him, involving a break-in, dead man, an old acquaintance, and a missing list.

The situation comes to a head with debates about idealism and disappointment, values of the East and the West, and freedom and control. As decisions are made, personal relationships begin to falter.

Elke repairs the radio in the compartment and everyone hears the news: A wall is being built through Berlin and along the state border to seal off the Soviet zone.

The news of the Berlin Wall's construction continues to spread throughout the train. Arthur and Andi finally find what they have been looking for all this time.

As the train makes its way along, a reporter comes to interview Edith Salzmann, a locomotive driver. Through them, we get an impression of the roles and daily life of people in East Germany.

As the train continues its course towards Berlin, the band of musicians perform a song about yearning for freedom, which contrasts with the security checks of East Germans returning from the West.

The first segment introduces us to the main characters who, aboard the train from Munich to East Berlin on August 13, 1961, will face a difficult decision: freedom or home.

After the success of the internationally acclaimed Threepenny Opera, the film industry sets its sights on creating a film version. But Bertolt Brecht (Lars Eidinger) is not prepared to play by their rules. His conception of The Threepenny Film is a bold, uncompromising vision, steeped in politics and sharp satire. He aims to forge a cinematic paradigm shift, a goal he knows the production company will never endorse, their focus firmly entrenched in commercial viability.

Nina and her colleague Daniel ask Mirko whether he has contacted the criminal investigation department as promised. Harry Möller tells her colleague about the date she went on the previous evening, and Hannes overhears his chief officer, Frau Küppers, with whom he is secretly in love, talking about her dreams...

Part two of "Der gute Bulle" ("The Good Cop") begins with Dirk Matthies reflecting on everything that has happened so far. Dirk tries to get in touch with Elias, while Nina and Daniel decide to question Mirko.

Mr. Krabbe gives his boss a teddy bear, and Dirk gives Paul some friendly advice on letting go...