Nina's grandpa arrives in good spirits. He’s even brought along Nina's cousin Marcello, who Max still thinks is Nina's ex-boyfriend! Meanwhile, Emma watches with interest as Jackie gets into a heated argument on the phone with her irresponsible brother, Marvin.

In the bathroom of Jackie’s houseboat, Emma discovers the cut-off hydrangeas and calls Henri. Just as Henri starts telling her about all the dangers of smoking these flowers, Tarik unexpectedly shows up…

Just as Tarik realizes that Emma is hiding in the houseboat bathroom with the stolen hydrangeas, Max arrives and threatens to call the cops. Later, Max angrily approaches Marcello about Nina, but they don't share a common language, which results in a big misunderstanding.

The day of the award ceremony has arrived, and everyone is in a great mood — except for Max, who’s furious with Nina and refuses to speak with her. Meanwhile, rumors are flying among the church congregation about the nature of Hannes and Jan’s relationship.

While cleaning out the headquarters to find items to bring to the flea market, Henri digs up an old Geiger counter. Meanwhile, Hannes’s ex-girlfriend Debbie shows up and starts behaving inappropriately, and Nina doesn’t understand why Max still won’t talk to her.

When Henri notices that his Geiger counter has gone off, he quickly alerts Emma. Emma’s convinced it’s just an old piece of junk, but when Debbie sees what’s going on, she makes a suspicious phone call. Meanwhile, Max is still refusing to talk to Nina.

An intruder grabs Henri — is he going to kidnap him? Meanwhile, Nina gets stuck in the elevator with Max, who may now finally be forced to talk to her.

At lunch, it becomes clear that Debbie is actually a pretty shady character. Meanwhile, Henri is kidnapped, and Nina and Max finally have it out in the broken elevator…

Max and Nina are trying to make the best of their awkward time stuck in the elevator together. Meanwhile, Henri is very relieved when Emma finally comes home. Together they search for evidence against Debbie… and find it!

After learning what Henri and Emma have uncovered in their investation, Hannes realizes the truth about the origins of the tea Debbie sold to them. In the meantime, the maintenance technician hurries over to fix the elevator – but maybe it wasn’t such an emergency after all. See for yourself!

Levin and Nele, who both aspire to be in the group of young detectives known as the Pfefferkörner, are at the Elbphilharmonie to watch piano prodigy Kim Soo-Ri rehearse. However, it seems someone there has sinister plans for him.

Kim Soo-Ri gets a message from his parents saying they have come to Hamburg a day early. He hurries to meet them, but he's in for another surprise...

Nele manages to get into the van that Kim Soo-Ri has been loaded into. They both wait for the right moment to make their getaway.

Nele and Kim have arrived safely at Goldmann Café, but the kidnappers are not going to give up any time soon.

Levin and the other Pfefferkörner follow the candy trail left by Nele.