Sonja Wirth goes undercover to hunt down a pickpocket at the Ritter dance school. But instead of catching the thief, she witnesses dance school owner Jonas Ritter being struck by a ceiling speaker during a lesson. For Hubert and Staller, it all looks like a tragic accident. Interestingly, it turns out that her boyfriend Yazid installed the speakers. Did he botch the job? Yazid vehemently denies it, and indeed, investigations reveal that the speaker mount was cleverly tampered with! Who could have a motive to eliminate the dance teacher in such a cunning way? When Hubert and Staller investigate a complaint from Barbara Hansen about illegal parking in front of her bakery, they learn from the newly-minted shop owner that the deceased was a notorious womanizer.