A cruel serial killer keeps the Hamburg police in suspense. Two women have already fallen victim to him. Both were killed after a Viking ritual, the so-called blood eagle. Although the perpetrator, Chief Inspector Fabel sends mysterious e-mails, the investigator pats in the dark. Only little by little it turns out that you are dealing not only with a psychopathic killer, but with a mafia gang, in whose machinations even senior police officers are entangled.