The security services of the People's Republic of Poland controlled several tens of millions of letters every year. Every day, specialized units were engaged in peeling off envelopes, reading and analyzing private correspondence, which resulted in reports on social moods. The letters written during the whole period of the People's Republic of Poland - intimate, full of pain and despair, but also those with threats to power, and also those more pragmatic ones, in order to do something, became the tissue for building a poignant internal portrait of the Poles in the People's Republic of Poland - were the basis for the creation of a moving portrait of Poles in the People's Republic of Poland. The film is composed of unique archival materials.