Lena tries to get out of East Germany to see her dying sister and comfort her niece.

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.

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.

Dirk sits down to dinner with his old friend Hilde, while Lothar and Katja stake out a dinner for singles.

Nico thinks he has maybe found his bag, but no such luck.

The team has a briefing to discuss how they will proceed with the two cases that have yet to be solved. Dirk learns more about Hilde's past.

Nico learns how to tell Emma and Lisa his name in German. When they stop to put gas in the car, he sees something he recognizes.

Hilde and her brother speak tensely about the future of their store. Meanwhile, Nicki comes up with a very humorous trick to discourage Marvin from taking his police escort to school.

Nico still doesn't have his luggage, and can't exactly remember his aunt's address. Lisa and Emma offer to give him a ride into the city.

The real bank robbers are caught and now it is time to find the other half a million euros. Luckily, Paschke has a hunch where it has ended up, and is able to help the police catch the other thief in time and have a merry Christmas.

Dirk goes to the butcher's shop to speak with his old friend Hilde about contaminated meat. Shortly after, Harry and Henning also stop by the store to speak with Hilde's brother, who was at the speed dating event.

"Halis" and "Kladi" attend a speed-dating event to look for the burglar. Meanwhile, the arrest made by Ben and Katja seems to have made quite an impression on the local youth.