Miriam, Doris, Inès and Christiane have been deeply connected since their school days at the "Sophianum". But the friends have much more in common: a big secret; The idyllic life in Zollberg falters when a duo of investigators from Vienna arrives and investigates a death that everyone thought had been clarified for a long time. This not only makes Miriam ponder in her function as a prosecutor; Through the investigation, the four women are confronted with their very personal fates and secrets, and their bond is put to a hard test.