A middle-aged woman takes a young lover, and leaves her husband and family to live with him. Her lover tires of her, and tosses her out and she wanders around pawning her jewelry in order to live. She makes a last visit to her family, planning suicide after she sees them.
A young locksmith, Jerzy, builds an airplane. By chance, he meets the Brazilian millionaire Tomasz Kotlica and his daughter Janina. Witold Siemacki, an aviator, stands in the way of Jerzy's career and happiness.
Ryszard Malewicz, a young inventor, is out of work. He had been waiting for months for a response from the ministry to which he had sent plans for his invention, an explosive of extraordinary power. Desperate Ryszard is comforted by his mother and his fiancée Maria.
In the beginning of the 20th century, Polish students are fully aware that the education system is not one in which the truth is taught, but rather one their government wants them to learn. A student contradicts his professor's stance that Suworow was one of Poland's greatest leaders. The argument between the two eventually leads to a wide strike.