The owner of an ice cream parlor in a coastal town is murdered. The investigation is conducted by platoon leader Rogowski, but soon he is joined by Lieutenant Joanna Szczęsna from the voivodeship headquarters.

Friends, with the help of the gamekeeper and forester, try to catch the poacher.

Fall 1925. Six hundred officers demonstrate in front of Józef Piłsudski’s country house in Sulejówek, demanding the Marshal’s return to active political life. May 1926—a government crisis; Wincenty Witos forms a new government. Piłsudski’s move sparks clashes between supporters and opponents of the ousted government. Piłsudski appoints Kazimierz Bartel as prime minister. The beginning of the “moral reform.” Ignacy Mościcki becomes president. Summer 1930. A joint platform of opponents to the Sanacja government is formed. “Centrolew” is established.