Cassandra Steen joins Xavier Naidoo for a performance of their duet "Wann" in front of a live audience.

Nico comes by after Lisa is finished teaching. While Lisa is on the phone with a potential new housemate, Nico takes a look around the room.

Lisa teaches her students the importance of learning nouns along with their articles so that the gender gets memorized as well.

Piggeldy and Frederick venture out into the snow to look for signs of other animals.

Lisa is in a rush the next morning, but promises Nico that they will go see his aunt after she is finished with work.

Piggeldy wants to know what a fight is. It doesn't take long for him to find out!

As they clean up after the party, the group talks about the nationalities of the various guests and the languages they speak. Sebastian then interrupts with unexpected news.

Singer Wincent Weiss has won the prize for best German artist at the MTV Europe Music Awards and an Echo Award. This optimistic song is about not giving up on relationships, even when it seems like it will take a miracle for things to work out.

The group plays a game with food from various countries. Nico learns that Nawin has gotten a job in France, but is reluctant to leave Germany.

Nico meets Selma, who is from Damascus, and learns how to speak about cardinal directions in German.

Translated: Piggeldy learns about meanness and cruelty in an outing that does not end particularly well.

Nawin receives some nice souvenirs at his farewell party, and he and Nico and Lisa discuss various German cities.

Nico and Lisa eat pizza with Lisa's roommates and talk about the party they are having.

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.