At the station, the group tries to figure out whether Küppers is actually pregnant and where the young runaway came from. When Walter Petri returns to work and locks himself in his former office, the real reason for his early retirement is revealed.

At home with Harry, the runaway finally speaks. Meanwhile, Walter Petri follows Dirk's advice and returns to his former office – but he doesn't like what he finds there.

After Henning's mistake, the group finds the young stowaway hiding in a dumpster. Meanwhile, Lothar uncovers new information about Superintendent Küppers.

Harry and Henning are called to the harbor, where a young stowaway has been found on a ship that was leaving for Sweden. Henning takes a personal call, during which the young stowaway disappears.

Großstadtrevier is a German TV series about a group of police officers who work together in the city of Hamburg.
This episode immediately presents two mysteries at the station: one in the form of a fancy package for the police chief superintendent, and the other in the form of an angry phone call. Dirk and Katja are then called to a local company, where a man is refusing to leave his desk despite having retired.

Nico asks Tarek how often he and his friends get to play soccer together. It seems that they are all quite busy, but still manage to stay in pretty good shape.

The guys get ready to play soccer, taking inventory of their equipment and food. Nico doesn't have soccer shoes, but is able to borrow some.

We see how Yara got a phone call two weeks ago that led to her unexpectedly flying to Switzerland.

Both perpetrators are caught in their respective crimes in this final segment, allowing Katja and Nicki to move on with their lives.

When the autopsy records reveal that Katja's father couldn't have killed himself, the group realizes it is time to go after the murderer. Meanwhile, Nicki learns that her father is deceiving her.

Selma comes to the apartment to see if Nico accidentally took her wallet after their shopping trip. While Nico frantically gets dressed, she talks to Inga about her family.

As they consider destroying the murder weapon, Lothar, Ben, and Katja go back to the scene of Katja's father's death.

While Katja deals with the terrible news about her father's death, Lothar argues with Joe about how the situation was handled.

Nico tries on some new clothes in various sizes while the man who took his shirt walks by unnoticed.

Joe tells Katja that her father actually committed suicide. The others back at the station are unable to find out any information about what happened to the weapon that night.