A film based on authentic events – the life story of engineer Eugeniusz Gruszczyński - a prisoner of the Auschwitz Birkenau concentration camp as a child, adopted in Poland after liberation of the camp and the life story of his biological mother and her relentless search for her son. A very emotional and touching picture showing the mother’s tragedy and suffering, which eventually has a happy end.
Zinaida Worobiowa and her son Gienka end up in a concentration camp, where children are brutally separated from their parents and put in a special barrack whose windows are covered with wooden boards. Before being separated, mothers order their children to remember their names. Zinaida remembers her son’s camp number. After the war ends, the children are placed in a Polish orphanage. The teacher – Halina Truszczyńska adopts the boy, ensuring him good living conditions and education. Gienka, as an adult man, is numerously promoted in the merchant navy. In the meantime, the real mother is still looking for her child. With the help of former co-prisoners and the curator of the Auschwitz-Birkenau Museum – Tadeusz Szymański Zinaida eventually finds her son. From now on, Gienka, officer of the Polish merchant navy, has two mothers – one in Poland and another one in Minsk.