The daily sight of black SUVs and sleek sports cars outside the Sophianum makes it clear: this is where parents bring their children to an elite school. Among them are Miriam, Doris, Inès, and Christiane—four women who have been friends since their own school days at the Sophianum. Together, they have experienced highs and lows, joy and sorrow, successes and defeats. They are close and stand up for each other. But there is also something between them. Miriam, a successful prosecutor and mother of three, has her own personal secrets. This not only causes her marriage to Joachim to fail. She has to make a decision... As if that weren't enough, a police inspector and her colleague from Vienna show up to investigate an accident that suddenly turns into a murder case. This puts the trust and solidarity of the four friends to the test...