It is 5 May 1945 and the uprising against the hated German occupiers has broken out in Prague. The Czech guards open the gate of the Pankrác prison to allow the prisoners to escape en masse. Many of them are shot dead by the German guards but young Ruda (Jaromír Hanzlík) manages to run away. He is taken care of by one of the Prague fighters, concierge Kytka. Kytka hides him in the flat of the house's owner where only the young maid Karla (Jana Brejchová) is left, ordering her to take care of Ruda.
A simple print worker selflessly cares for his sick mother. He spends all his free time with her and the only hobby he indulges in from time to time is model railways. But the arrival of a beautiful girl changes everything. The hero suddenly falls into a love infatuation, not knowing how to cope with the conflict of his unrecognised feelings and his concern for his mother...
When Dr. Hahn is found murdered in the hospital’s inspection room, investigators question several suspects: his colleague and longtime lover Dr. Marie Nováková (whom he cheated on with nurse Jiřina), the nurse herself, Dr. Petera (whose career he stymied), a senile patient named Zima, and the inept clinic head. As police sift through truthful and deceptive testimonies, complex professional rivalries and personal entanglements among the hospital staff come to light.
