Winter in Dresden. Journalist Kirsten Bertram is in the hospital. There she meets Marianne "Ännchen" Kulka, who is a descendant of the family of Erich Kästner and belongs to a free church community. When Ännchen is discharged from the clinic, she decides to radically change her life. She joins an initiative that aims to prevent the expansion of Königsbrücker Strasse in Dresden's Neustadt in the name of Kästner. However, when an intern at the Erich Kästner Museum is murdered, Ännchen becomes the prime suspect. Kirsten, on the other hand, is convinced of her innocence and begins to investigate on her own.