Thorsten has to get his supermarket ready before the boss Sabine Kolinski arrives. Meanwhile, Fahri Yardim steals nuts, Titus is trained and Pina meets a guy.

Today, a mystery shopper is supposed to come to the supermarket to decide whether Titus will be hired or not. In addition, Pina's guy comes back, Flo clarifies something with random customers and Thorsten discovers dating apps for himself.

The students from the school across the street have motto week and take the supermarket apart. Peter traditionally joins in and Titus meets a girl.

Jonas gets his face kicked in by a group of skater boys, there's a plague of mice in the supermarket and Titus hates footballers.

Titus and 450er have caught a mouse, which they now have to bring to the Kolinski branch in Eimsbüttel. There they meet Henry, Pelle and 450er's Crush Kimi. Meanwhile, at Kolinski Altona, Flora teaches Mrs. Jensen how to rap, Peter flirts with Pina and Lia tries to make Thorsten a better branch manager.

A fire alarm goes off at the Kolinski Altona. Jonas' mother comes to visit, Titus is surprised by Lisa and Thorsten has a big problem.

Sabine wants to see the pictures from the surveillance cameras. But the cameras still have to be installed. Thorsten is overstressed. In addition, Peter becomes a father and Jonas falls in love.

Because of the bad employee evaluations, Sabine has sent a trainer for non-violent communication to the supermarket. Many tears flow during the course and Thorsten throws fruit around.

20 years of Thorsten's branch. Thorsten throws a fat party like every year. Flora gives a concert and hopes that Peter Fox will come by. At the party everyone gets together and some also get a little closer.