It seems as if Torben has been caught red-handed and the evidence adds up against Onno. Can they convince the police of their innocence?

Piggeldy is curious about birdsong, and Frederick has a few questions he wants to answer for himself as well.

Nico and his friends order pizza and find out that someone has responded to the photograph of his aunt's bicycle shop on social media.

The police doubt the credibility of the evidence against Torben Witt and continue to watch over the Claassen residence. Meanwhile, Ina Grote helps with the arrest of Onno Wulf.

Frederick tells Piggeldy that he can fly down a mountain by flapping his ears.

When Nico shows Nina and Sebastian the photo of his aunt, Sebastian has the idea to post the photo online and see if anyone recognizes the bicycle shop.

Frauke Claassen is certain that Torben set her car on fire, and the evidence also seems to point to him. Meanwhile, it becomes clear that Onno Wulf has been tampering with the card reader in Ina Grote's shop.

Piggeldy tries to learn how to drive, but something doesn't seem to be working out quite right...

Nico goes to the "Wohngemeinschaft" ("WG") where Lisa lives and meets her housemates, who are getting ready for a party.

Harry, Henning, and Lothar find Onno Wulf's criminal record and warn Ina Grote. Harry finds out that Lothar is going to the training program, and confronts Dirk, who finds yet another excuse.

Piggeldy and Frederick go hiking, which doesn't appeal to Piggeldy at all until Frederick starts a sing-a-long.

Nico and Lisa go to the police station, where her father files the little information Nico can give him.

Henning and Harry visit Ina Grote's shop and meet a suspicious employee. Frauke Claassen requests that the security detail at her house be removed.

Nico has the bold idea to call a radio station and tell them about his missing bag.

Lothar and Henning find there is a common link in the issues with their bank cards, while another scene erupts between Frauke Claassen, her daughter, and Torben Witt.

While Lisa drops Emma off at a birthday party, Nico waits in the car and hears something interesting on the radio.

Politician Frauke Claassen comes to the station and it turns out that there is another coincidence related to the two protesters.

"Großstadtrevier" is a series about a police station in Hamburg. This episode begins with rioters being brought in for questioning, one of whom knows Nicki.

Nico and Emma play a game in the car just before Lisa drops her off at a birthday party.

Dirk and Lothar are able to trap the second culprit. Later, Dirk learns that things are looking up for both Hilde and her brother.

Lisa calls her father, a policeman, to see if he can help find Nico's aunt.

Piggeldy learns to read... sort of.

Nico, Lisa, and Emma run into Lisa's friend Max, who suggests that they get Lisa's father to help with Nico's situation.

Hilde tries to convince Dirk that her brother has been tainting the meat in their shop, but Dirk is too clever. Meanwhile, there's a break-in, but not at Katja's or Lothar's.