Eva Simon is actually a woman who can not be shaken by anything: Together with the family of her son Theo, she lives contentedly on a former farm in the picturesque Rheingau, where she practically does the housework on her own and takes care of her grandchildren Lilli and Nico, while Theo and his wife Marlene pursue their professions. But that the young, fun-loving photographer Jonathan Wolf is now moving into a side building of the courtyard and setting up his studio precisely where Eva once ran her beloved cabaret - that's too much for the self-confident woman in her mid-fifties.

Thomas Borchert, the unlicensed lawyer, and his colleague Dominique Kuster take on the case of Anna Sutter, who wants to contest the will of her father, watchmaker Ludwig Sutter, following his unexpected death. Shortly thereafter, Anna Sutter's half-brother René is found murdered in his office, and the young woman becomes a suspect in the murder. The evidence points to her guilt, particularly the fact that her fingerprints are found on the murder weapon and that, according to a witness statement, she was the last person to be with him before his death. Dominique Kuster attempts to represent her as a lawyer in the murder trial and prove her innocence.