The young musician Daniel Gerber last lived on the streets. Now his body has been found on the banks of the Rhine. Apparently he had been brutally beaten several days before and then died of his internal injuries. Inspectors Max Ballauf and Freddy Schenk quickly find out that shortly before his death, Gerber had applied for a job as a pianist in a hotel bar. However, there was probably a fight between him and three young people who were partyingBankers - Another lead leads the commissioners to a residential building near the alleged crime scene. In fact, the forensics team discovered a bloodstain in the hallway. The DNA found matches that of the victim. However, the residents of the house prove to be unhelpful. Freddy Schenk is not deterred by this: In particular, the attractive, single art professor Claudia Denk has aroused his interest.