Even though he is a committed communist, his directness and willfulness clash with the prevalent conformism and lead to his exclusion from the Socialist Unity Party of Germany.

He reasons that having read his reports to the Stasi, sometimes referred to as a "perpetrator file" (German: Täterakte), he first and foremost couldn't forgive himself.

As Gundermann becomes a father and his wife expects him to spend less time on tour and on his music, he promises improvement.

In the end, he reconciles with his band members and the audience after his genuine confession about his ties to the Stasi.

[3] Jens Quandt produced the soundtracks which feature vocals from leading actor Alexander Scheer.