Martha is online and as long as she is connected to the main unit her life continues – monotonous, convenient, perfect. Nevertheless the well maintained system gets disrupted and Martha herself becomes the problem. The calculated consequence: offline.

In the late 70s, young Petra Grust begins teaching at the progressive Odenwald School. She is flattered by the trust placed in her by its widely respected headmaster Simon Pistorius. But gradually certain incidents at the boarding school begin to unsettle her. Petra then realizes that Pistorius is abusing Frank, a 13-year-old. When Frank is told that he has to spend school holidays with Pistorius, he tries to commit suicide. Petra tells Frank's father (the chairman of the school's governing body) but he believes Pistorius instead of his own son. Petra fails to convince people of the man's true nature. 30 years later, Frank goes to Petra, who has long since left the school and has stopped teaching altogether. He has never been able to speak about what happened but now, after the suicide of another pupil, he is no longer willing to remain silent. He wants Petra to bear witness at the school's forthcoming anniversary celebrations.

In the late 19th century young radiologist Georg starts to experiment with the recently discovered X-Ray technology. At first his methods seem promising and his patients get better. Soon however, he plunges himself more and more into his work and must learn the true devastating nature of his treatments.