Nico and his friends celebrate his move into Lisa, Nina, and Sebastian's shared apartment. Then an unexpected guest turns up...

Nico's older brother Pepe turns up at the celebration and demands that Nico fly back to Spain with him. Apparently, Nico's parents are quite worried.

Pepe needs a bit more time to convince Nico to come back to Spain with him, so he checks into a hotel for the night. Unfortunately, the machine can't process his credit card and he has to pay in cash.

When Inge says that she's tired of doing the same thing every day, Max and Tarek help her book a trip along the Rhine River.

Cettina reads Part 1 of "Das Aschenputtel," known in English as "Cinderella." By the way, you'll notice that the German word for Cinderella is neuter – which means that "es/ihm" here translates to "she/her."

Selma's father has accidentally left his ID card at the hospital, but doesn't know how to get back there. He runs into Yara on the train platform, and she tells him what his options are for public transportation.

"Alles nur geklaut," one of the earliest hits by German pop band Die Prinzen (The Princes), is a humorous reflection on how an artist's work may not always be original, and how that can affect a relationship. The German verb "klauen" is slang for "to steal."

Nico moves into Sebastian, Nina, and Lisa's shared apartment. He's actually collected quite a lot of stuff during his short time in Germany! Meanwhile, Sebastian asks Lisa to help him with a photo project.

Nico and Sebastian are in the middle of moving a heavy piece of furniture when Inge shows up and starts going on and on about her upcoming trip.

Nico and his new roommates talk about his relationship with his brother, Pepe. Then Lisa gets some good news.

In a tense confrontation with her landlord, Yara learns that the rent she pays for her bicycle shop will increase starting in January.

Kasperle, or Kasper, is a traditional puppet character from the German-speaking world, and “Kasperletheater” (Kasper shows) are performed in a manner similar to that of the UK’s “Punch and Judy.” Here, the King has lost the key to his beloved treasury—and, with the King’s promise of a reward, Kasper is eager to help him find it.

As part of Lisa's German lesson, Nico and Selma discuss their interests. Nico learns that Selma has never learned how to ride a bike, so he offers to teach her.

Deine Freunde is a German group that writes rap songs for children. This song is about the contrast between what you have to eat at home and what you get to eat at Grandma's when you're a kid.

In Part 2 of “The Lost Key,” Kasper and his friend Seppel search for the king’s missing key together. They finally track down the thief — but will they be able to outsmart it?