SOKO Leipzig is one of the most successful crime series on German television. Between 2001 and 2020, 19 seasons were already broadcast. The series is about the investigative work of the special commission of the Leipzig police. In this episode, chief commissioner Hajo Trautzschke experiences his worst case to date: a murder attack is carried out on his daughter Leni, who is doing research as a journalist in Moscow. On the phone, Hajo witnesses how she is attacked. The SOKO boss rushes to the Russian capital. Hajo knows that Leni was on a hot story and must fear that Leni was murdered. Desperate, Hajo sets out to find his daughter in the metropolis of twelve million.