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1. Bölüm Emma's new classmate Nina is accused of theft. Together with her fellow student Max, Emma sets out to search for clues.
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2. Bölüm Max is being blackmailed by drug dealer Dragan and is forced to sell "Happy Pills" at school. Henri senses another case and falls under suspicion himself.
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3. Bölüm Nina and Emma get robbed. When they confront the thief, they see how she lives at home. Meanwhile, the Pfefferkörner (Peppercorns) discover that Nina is also hiding something.
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4. Bölüm Emma and Max find a suitcase with a pair of sneakers in the bulk waste. Shortly after, there is a break-in at the Krogmanns' house and Henri's dog Feline disappears.
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5. Bölüm The Sudanese girl Acai helps Henri after a fall, but then disappears with Emma's bicycle. The Peppercorns observe her selling illegal cigarettes with her mother.
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6. Bölüm The Peppercorns suspect blackmail: A female classmate was filmed while changing in the school locker room and is now being asked to pay money to prevent the video from being posted on the internet.
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7. Bölüm Henri's mother is visiting and wants to take her son with her to Africa. When Henri discovers smuggled ivory, he ventures on a dangerous solo mission.
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8. Bölüm Ben has supposedly composed the perfect song for Nina. Using a clever plan and sophisticated technology, Nina, Emma, Max, and Henri lure music dealers into a trap.
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9. Bölüm A pub owner sees Grandma Leni as competition. Her customers are scared away and the next day her food truck disappears. The Peppercorns set out to search for it.
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10. Bölüm Grandma Leni is hospitalized and gets robbed there. To avoid worrying her even more, Max doesn't call the police but instead sets out with the Peppercorns to search for the thief.
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11. Bölüm Matteo is suspected of stealing the school's donation box. The Peppercorns want to prove his innocence. In doing so, they receive help from boxer Henry Maske.
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12. Bölüm The flower beds for the competition "Germany's Most Beautiful School Garden" have been vandalized. Is someone trying to take revenge on Nina's father? Emma's trail leads to a houseboat.
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13. Bölüm Henri discovers radioactively contaminated tea in the headquarters. Nobody believes him. But then Henri gets kidnapped. Meanwhile, Nina wants to improve her relationship with Max.