After Emma and Henri have emigrated, Nina and Max find two new Peppercorns in Jessi and Luis. Together they help homeless people who are about to be driven out of the HafenCity.

School life is being disrupted by malicious pranks. The school principal is also being threatened. Is a former student who was expelled from school behind it?

Jessi falls in love with her hip-hop teacher Chuoc at the youth center. When she realizes that he is involved in criminal activities, it seems to be already too late.

The Peppercorns discover that pills are being switched among residents in the senior home. Nina's former neighbor is also affected. Max observes the nursing staff.

Jessi is supposed to catalog stuffed animals for a job. But thieves use her key to gain access to the villa. Is a handyman behind the theft?

Max sneaks into a club that films dangerous dares for the internet. He puts himself in danger, and then Nina also wants to take a break from their relationship.

Grandma Leni's historical cookbook containing the original recipe for currywurst has been stolen. The Peppercorns suspect Fish-Heini, but then Luis disappears.

An angel statue is stolen from the cemetery. The Peppercorns investigate the von der Hagen sculptor family and research the topic of occultism.

Is Max's friend a neo-Nazi and involved in an attack on Nina's brother? The Peppercorns investigate in the environment of a group of right-wing radical youth.

Luis has a new hobby: treasure hunting using GPS. In the process, he gets locked in a tunnel system with Jessi and Feline. Can Max and Nina help their friends in time?

Max has a new girlfriend. Luis and Jessi try to support Nina. She loses her theater role and falls under suspicion of having poisoned her rival.

The Peppercorns investigate an unappetizing case. An endangered snake is supposed to be eaten as a delicacy. Meanwhile, Luis receives a visit from his father.

Dog Feline becomes sick after running across a construction site. A hotel design by Jessi's father is supposed to be built there. Was toxic waste illegally disposed of here?

Nina has to move to Italy with her family. Saying goodbye to Max and her friends is difficult for her. But then the Peppercorns have to catch a pickpocket.

Jessi has a hard time with new Peppercorns. But when her classmate Jiao disappears, Luis convinces her to investigate with Niklas, Anton, and Ceyda.

The Peppercorns support Jessi during climbing training. Suddenly they are threatened. A photo leads to the blackmailers who make money with criminal sports betting.

Niklas is afraid: His mother is suspected of theft. The Peppercorns want to prove the mother's innocence. They suspect the real perpetrator is at the campground.

Luis' dog Feline suddenly becomes very ill: She ate poisoned dog bait in the park. The Peppercorns set out to find the perpetrator.

Ceyda is offered cheat sheets for a school dictation. She gets filmed and is blackmailed with the footage: Ceyda risks being expelled from school. Jessi is also keeping a secret.

Anton is desperate: A classmate falsely claims that Anton attacked him. He needs the help of the other Peppercorns - but they are distracted.

On Alex and Isabell's wedding day, there is great excitement. Luis is in the hands of arms dealers. And Erol and Anton are suspected of being connected to terrorists.

While Niklas is suspected of stealing jewelry at a party, Ceyda only has eyes for her big crush Ivo. Does he have anything to do with the thefts?

Grandma Leni was given counterfeit money, now she fears for her livelihood. Niklas soon has a suspect, but this also puts him in a dilemma.

The Peppercorns are searching for stolen strollers. Then Niklas' mother Janin disappears. Is there a connection?

At the boat storage facility, a customer's yacht is stolen. The insurance company refuses to pay, and Erol's existence is at stake.

While wedding preparations for Isabell and Alex are underway, there's a break-in at the headquarters. The Peppercorns try to investigate without the bride and groom noticing.