In the first episode, Grete and her family are moving from Hamburg to the Black Forest. No sooner have they arrived than the first difficulties arise, because the Hansens can't get into their new house...

Dr. Hansen decides to drive to the village to get the key. At the same time, Jonas sets off to deliver the key to the new vet family, along with a cake as a welcome gift.

While their parents are busy getting the house ready, Lilie and Greta go shopping and have their first experiences with the villagers. Greta doesn't exactly receive a warm welcome at school, but there is someone who stands up for her!

Oswald the dog is ill and Jonas is very worried about him. While his father is getting ready to put Oswald out of his misery, Jonas seeks help from the new vet in town.

Dr. Hansen still doesn't have any patients, and his daughters are getting worried, too. Is there anything they can do to help? Meanwhile, he finally meets Jonas's family.

Jonas's world implodes when he realizes that Oswald has gone. His father must have discovered his hideout...

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

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.

Nico is disappointed to find out they have the wrong address for his aunt's bike shop.

Nico can't stay in the shared apartment anymore, but Lisa gives him some ideas where he might possibly stay.

A first potential new housemate comes to look at the room and takes a tour of the group's Wohngemeinschaft (shared apartment).

The next candidate to take over Nawin's room also fails to make a good impression on the group.

The next potential roommate is obviously too fussy for Lisa's apartment.

Lisa's colleague is ill and can't teach her class. Lisa would like to help out, but needs to find someone to babysit for Emma first.

Lisa reviews Emma's schedule with Nico so that he will be prepared for his duties as a babysitter.