Kris and Pinar investigate a brutal attack beating into hospital cop Karin Berger, who prevented serious injury to junior companion Elina Sherzova, daughter of Chechen crime clan Achmat Sherzov, as part of a police project attempting to offer the younger generation a legal alternative to organized crime. Either Achmat wanted Elina abducted, or his rival, Albanian crime lord Granit Hoxha, who wants to take over a large port turf. The police faces a clan war with a Rimeo and Juliet twist: Granit's cousin Bilal Hoti, who was ordered to shadow Elina, fell in love and ...

'Nature healer' Adinda Weyrauch refuses to acknowledge the break-in at her place Kris Pinar and responded to was a crime, maintaining in ER she bumped into a cupboard sleepwalking with a ghost during a seance, yet she was robbed. Adinda's doting elder neighbor, former stalking suspect Paus, is always ready to help her out, but may feel neglected. Her 'patients' and especially their partners hold grudges as she can't heal, just get gullible believers obsessed with nonsense. She discharges herself.

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Psychotherapist Dr. Norbert Paulsen was injured in his practice, where nothing was stolen, so the team suspects a disgruntled or crazy patient. On his calendar for that day was only troubled teen Lars Ahlers. Paulsen fails to hide from Mattes his marital tension with Dunja. Adult patient Stephan Niemeyer was furious to see his aggression therapy terminated recently, and viciously jealous of his ex-girlfriend Nina Blum's mystery lover Kai, who turns out an alter-ego, whose secret identity is central to an impending suicide attempt.

Prosecution official Gerald Renner warns shocked Pinar that her Turkish mob clan brother Bruder Malik, whom she helped arrest, is being released after their father's Aslan-clan managed to get rid of crucial evidence. Does he stay in Hamburg for revenge, maybe a gang coup? Mattes and Melanie investigate vandalism and break-in cases, as in Conny Woite's cafe and a known rocker band member's home. Both those involve Malik's cousin, fellow Aslan-Clan henchman Dr. Ayoub Durmaz. Malik seeks revenge but finds a though adversary in Ramon Praatsch and his Wheel Devils biker ...

During an emergency SWAT exercise in a high-school, Kris and Pinar, who didn't keep back to back as prescribed, hear a real explosion in an adjoining building where pupil Kaya Böhme (17) is found in shock, having blown off a finger manipulating illegal fireworks. She refuses to talk about cahoots and a presumable stock of such dangerous contraband. Only Kaya's classmate Lasse Wirnitzer, near suspension for mischief, ends up talking about his date Lea Sander who dumped him for refusing to continue her insane 'Internet prank' plans, including more explosions.

Shortly before concert pianist Hannah Jacobi's concert in the Elbphilharmonie, which may launch her internationally, agent Valentin Vasmer reports presumed ill intent, when her hand gets injured by a smashing limousine door as autograph hunters swarm around, coming clean on Internet threats till then only shared with her PA and lover, Thilo Bahnsen. As all professional protection officers are guarding the Swedish royal visit, Hans and Franzi take the first shift. That night, a masked intruder knocks down Tillo and escapes, possibly having entered the wrong hotel room....

Alexander Schmölzer finds his wife Laura at home, cuffed and gagged all night. Kris and Pinar assume a robbery, yet Laura keeps contradicting herself while denying. Laura is diagnosed pregnant, Alexander is convinced not to have sired, suspecting the (fake?) intruder. The senior neighbor's drone recording, testing it as a gift for a cousin, shows the intruder, which identifies as drug-convicted ex-Cambridge-qualified Torben Reimers, who runs a flower shop with mother Marlies and brother Jan, insisting to ignore Laura, whose dark secret affects both families thoroughly...

Station captain Wolf Haller has a nightmare evening after a swell opera visit: on the way home his wife Sybille, who insisted to drive, confesses she 'met another man' and is badly hurt as a big black of wood is swung to the car window from a bridge. Both wake up in hospital but Sybille remains comatose for days, and prefers to see her new admirer, a Kiel professor with Turkish roots. Although officially on sick leave, Haller wants charge rather then Melanie, whom he ends up scolding a career vulture. He focuses on family man Sven Dörner, who reports, after fake ...

Drug dealer Jack Engel ceases the pursuit of Mia Beier (16) who stole form him but nearly runs under Hans and Franzi's police car and escapes after ER checkup, using a classmate's name, to bring the loot, from the hospital pharmacy, to her sick father. Police and dealer track her down, while her remarried mother explains the brat refused further contact after her father was abandoned, claiming she ignored Max Beier became dependent on painkillers after a serious construction site back injury. Hans's Internet date Rita Wolgast proves hard to shake off, turning up in ...

Justin Hertels is brought to ER, electrocuted in his bedroom, allegedly knocked out by a robber. Mattes and Melanie doubt it, as a neighbor reports Hertel's daughter Sina (11) fled the home. Sina's Bulgarian mother Elena is missing, the running brat found by Hans and Franzi and checked out for mild abrasions while Sina's class teacher Amira Samimi helps see clear the family got into trouble as Justin was semi-disabled by car accident injury aftermath forcing him into street begging.

Popolar gymnasium (high school) principal Meike Daschner is hospitalized after electrocution by door under current, after stepping into a water balloon puddle, all part of the sixth formers' authorized end of term prank orgy. Perhaps the intended target was unpopular janitor Jürgen Jahn, who raises his sixth former daughter -alone on the flat that goes with the job. The ream focuses on the prank feast organizing committee: klutzy Jannis Schröder, who has a beef with Jahn, and Tamina, Pauline's arrogant but crafty buddy. Helpfully knowledgeable is even more ambitious ...

Frederik Tomke (seventeen) needs to be rescued and reanimated in ER after a fatal blackout in the pool during apnoea fin-swimming. Father Lukas, who hopes for his son to live his former ambition to the full, files a complaint against Frederik's coach Robert Seifert, the best in Germany, aiming for the European championship gold and once Lukas's medal rival, but also for Frederik's mother Mina. The boy was smothered by parental love and expectations into a desperate move, only noticed and reported by his frustrated club second by far, Klaas Färber. Hans's dreaded first...

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Melanie und Mattes sind auf Streife, als der traumatisierte Malte Hinrichs mit Vergiftungserscheinungen Richtung Hafenkante wankt und in Mattes Armen zusammenbricht.

Als die mobile Friseurin Vanessa Tamm bewusstlos auf offener Straße aufgefunden wird, ist den Ermittlern schnell klar, dass es sich nicht um einen normalen Verkehrsunfall handeln kann.

Nachdem die an einem Hirntumor erkrankte Sophia Landwehr im Rollstuhl einen Abhang hinuntergestürzt ist, bekommen die Beamten des PK 21 einen Hinweis auf illegale Sterbehilfe.