The police probe the strange and violent death of the captivating singer Katharina Läufer, and at her funeral, five of her former classmates gather.

The disappearance from the boarding school is under renewed investigation. As the friends engage in an unsettling game, the simmering conflict between Butsche and Roman erupts.

A grim discovery awaited the detectives. Within the confines of the brothel, Butsche forged a connection with Pearl’s daughter, Elsie. Meanwhile, Nadja gleaned insight into the group's singular preoccupation.

Butsche sought out Elena's assistance regarding Elsie, a move that stirred Roman's displeasure anew. Meanwhile, Nadja delivered a startling revelation to Grünberg and explored a daring theory concerning Katharina.

Seeking refuge, Elena finds herself in an unexpected sanctuary. Roman pursues retribution, while long-buried truths begin to emerge as Nadja interviews Merten Brodmann’s mother.

With each new victim discovered, the police focus their attention on a single suspect. Yet Nadja’s persistent reservations—and a piece of information from Köhler—propel her toward a startling encounter.