Lisa knows that something's up with Nina – and she's right, because Nina has life-changing news.

Yara has a problem with a disrespectful neighbor who always puts his trash container in front of her shop. She tries to talk to her landlord about it, but he's reluctant to get involved.

As the whole precinct celebrates the safe return of the Miriam's baby, Dirk receives a surprising inheritance from Kutte...

Dirk goes to wake Kutte, only to find a very sad scene. Meanwhile, Harry and Henning wrap things up with the stolen mail incident.

Johannes, Konstantin, and Phillip work the Christmas sale together at Johannes's pet store, making sure that all of the animals leave with loving new owners. Finally, only the parrot remains, which then goes to a very special home...

There's a dispute between the roommates in Lisa's apartment. Nina feels she's the only one making an effort to keep the place clean. In the middle of the fight, Lisa has a good idea regarding Nico...

Kutte refuses to go to a shelter for the night. Miriam finally turns up at the police station looking for her baby, and they all head over to her father's... only to discover that the baby's no longer there.

Selma rushes to see her father in the hospital, and runs into Inge. Inge has a lot to tell Selma, primarily that she's having a dispute with her son.

Henning and Harry discover that Potowski did in fact steal the letters, then find him in grave danger. Dirk reaches a decision about Kutte, and Miriam realizes that trusting her father with her newborn was a very bad decision.

Marion tries to talk to Johannes, but he's too preoccupied with reuniting Sascha's parents – and she's getting the wrong idea about his relationship with Sascha's mom. Sascha's father has gotten some rest and is ready to help out in the pet shop, which is good because there's a Christmas sale and the store is an absolute zoo!

Miriam's mother confronts her about the baby and refuses to accept her decision to keep it, eventually kicking her out. Meanwhile, Harry begins to suspect that the building manager has something to hide...

After the German lesson, Selma realizes that her mother has been trying to reach her. It turns out that there is bad news regarding her father's health.

Selma and Nico have their German lesson with Lisa, who has lots of creative ideas. They use Sebastian's photos to practice describing people, but when Lisa asks Nico to describe his own family, it's clear he'd rather not discuss them.

Marion overhears Johannes speaking candidly with Sascha's father and realizes she has still has feelings for him. When her boyfriend Hans-Peter comes to the door, she has to tell him she's no longer interested.

After Sascha's mother tells Johannes about the bench on the canal where she and Phillip first kissed, Johannes finds him sleeping there and in very bad shape. He brings Phillip home and tries to console him. Marion, meanwhile, overhears everything through the thin wall between the apartments.