A new school day, a new case. When Emma learns about a possible extortion, she immediately takes off for school to check in with her fellow detectives!

Nina has to move to Italy with her family and has had a hard time saying goodbye to Max and her friends. Suddenly, the Peppercorns have a pickpocket to catch.

Our heroes are back on board the ferry looking for the thieves. Just as they are about to give up, they notice some unusual behavior. Are they on the right trail?

After a second wallet is stolen, everyone becomes even more suspicious of Nina. Max is still convinced that she didn't steal anything, and while he and Emma are in math class, Henri stands watch outside the gym.

Henri and Emma finally chase down the thief – and prove that Nina didn't steal any of the wallets.

After the Peppercorns wrap up the case of the stolen wallets, Max sets off on his bike to his grandmother's food truck – and has an unfortunate encounter along the way.

Emma is determined to help Max, who is being blackmailed by a drug dealer. Nina continues to claim that she doesn't need any friends and doesn't want to join the Peppercorns. Meanwhile, a student has a bad reaction to the happy pills...

After Anna is taken to the hospital, Nina goes to find Emma, only to learn that Emma's in Sankt Pauli trying to trace the origins of the drugs.

Having broken into Dragan's place, Emma and Nina learn that he is using their classmates to push drugs at their school and others. Suddenly, the dealers come back to their hideout – and the girls are trapped!

If the drug dealer Dragan finds out that the Peppercorns are on his trail, he’ll surely make trouble for them. Fortunately, Emma, Nina, and Max are able hatch a plan to get Dragan arrested before it's too late.

Emma, Henri, and Max want Nina to join the Peppercorns, but she's very reluctant to engage with them. Emma picks Nina as her partner for a photo project, hoping that she’ll find out more about her. But then something unexpected happens…

Emma and Nina follow Milla, the girl who ran off with their camera, and confront her in her messy apartment, where she lives with her sick mother. Although they manage to get the camera back, Nina’s relief is clouded by the fact that she feels sorry for Milla.

Milla, Leila, and Mark have cleaned the place up for Ms. Wiedemann's visit. Is everything going to go as planned?

Milla thanks Emma for not exposing the truth during the youth welfare officer’s visit to the apartment. Meanwhile, Max and Henri set off to visit Nina’s old school — and come closer to cracking her secret.

Nina is acting quite strange... Could it be that she's in love? Meanwhile, the donation box has been stolen from the school administrator’s office!