Seventh form pupils at a grammar school in Přívlaky are preparing for a secondary school sports competition. Class creep Krhounek gives the class teacher Lejsal a copy of the seventh form’s magazine Roar. Most of the teachers insist on severe punishing the culprit. The author does not own up and consequently the whole class is punished by being banned from taking part in the schools competition. The most gifted pupil, Benetka, rather sharply criticises the school in a homework essay on a subject of his choice. The strict Czech language teacher is convinced Benetka is the author of the school magazine. Benetka denies the charge but his expulsion from school is proposed anyway on account the views he expounded in his essay. Eventually, Boukal, the author of the school magazine comes forward and admits to writing it. The pupils are allowed to take part in the contest and thanks to Benetka they win. In the meantime however the teachers vote to expell him.
In a country whose people have just been successfully persuaded of their superiority and the justification for military expansion by the fiery speeches of a dictator, the bacillus of a highly destructive form of leprosy has spread. It is called morbus Tshengi, or popularly „white disease“. The only one who has developed an effective cure for it is a physician of the poor named Galén. But he refuses to reveal the secret of his cure as long as the powerful destroy human lives through wars.
Emanuel Pokorný, a bachelor, is to join a rural church school as a professor. Before leaving, however, he finds an infant abandoned in his room. Since he has no time to search for the child's parents, he secretly takes the child to the boarding house. And from that moment on, there is no end to his travails...