East Berlin in the summer of 1961: Dr. Ella Wendt is transferred from Senftenberg to the Charité to ensure health care. Doctors and nursing staff leave the GDR en masse for West Berlin.

A newborn baby with jaundice is announced in the children's ward from the women's clinic. When the ambulance finally arrives, the baby's condition is poor. He needs a direct blood donation.

In a covert operation, the provisional wall is erected, dividing the city into East and West Berlin, thus making the Charité an immediate border area.

The first person killed at the Wall is floating in Humboldt Harbor. Ella is terrified that it could be Curt. Prokop performs an autopsy on the body. The investigation is carried out in absolute secrecy...

Ingeborg Rapoport continues to try in vain to enter into dialogue with Prof. Kraatz when a case of neonatal sepsis shows in a drastic way that the paths between gynecology and neonatology are too far apart.

Ella is supposed to represent Prof. Prokop at a research conference in West Berlin and present her latest results there. In order to be able to leave the country, Dr. Nowack has to vouch for her.