Sonja Brunner works as a prison officer in a prison. She has been earning money for the family for years, providing a living for her stepdaughter Iris and her husband Jens. Jens is a freelance writer and hopes to finally land a publishing deal with his new novel. After an incident with prisoner Michael Zeuner, who had taken Sonja Brunner hostage during an escape attempt, she moves to another prison - she represses the experience and continues to work. At first everything goes well, but the financial pressure at home increases.
