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

Lilly and her friend look at old photographs of Lilly's parents. In East Berlin, Lena and Rolf try to figure out how they can help Lilly.

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.

Pascal and Lena discuss how things will move forward. The next morning, Lilly races to the train station, desperately hoping she can stay with her aunt.

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...

Before returning to boarding school, Lilly shows her aunt her mother's house and they spend a few moments together.

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.