A landowner Gáthy and his wife adopt an orphaned infant at the birth of their own son, only to realize too late that they can’t tell which baby is which. They raise both boys as their own until, on the brink of the sons’ marriages, questions of lineage brought up by prospective mothers and meddling mothers-in-law threaten to unravel their family.

In 1948, when Hungarian industry counts on almost every liter of fuel, the production of Makert, an American oil company in Hungary, is declining by the day. The firm's American owners claim that the oil field is depleted. However, the new government controller, Nerges, discovers that this is sophisticated sabotage by which representatives of American industrial circles want to disrupt socialist construction in the country. With the help of Hungarian state security officers, Nergesz uncovers and neutralizes the saboteurs at the mine and hastens the Hungarian people's decision to nationalize Makert.

Lugosi works in the locomotive factory, earning little. He does not feel at ease in the world. One reason for his discontent is that his wife - a tractor factory worker - earns more than he does, and another is that she has even had her innovation accepted, while his has not. And because trouble doesn't come alone, poor Lugosi gets involved in a sabotage case.

In May 1919 in a small rural town beside Salgótarján the local high society wants to get the power back with the leadership of dr. Máriáss, exploiting the outside attack launched against the Republic of Councils.

On the Spring of 1945 the Jackson circus is heading towards the border with the clown Peti and Aida, the elephant. They have to play for the Hungarian Fascists, while Peti is hiding the Jew Annuska and Sanyika.

A few days from a daily life of a regular school in Hungary during fifties.

The war is over, but the Bodog family is starving. Varg's neighbor takes Mihai Bodog with him to do restoration work. They are well paid for this work and Mihai can finally please his wife Erji and their young son. When the workers are later hired to build a bridge, Bodog, a specialist bridge builder, cannot resist the challenge and is hired. But this time the workers are delayed in paying their wages, so their family is once again in need. Erji is forced to look for work...

Nagy István, the formerly poor peasant boy returns to his native village as a teacher. His conviction is that the abyss between rich and poor can be diminished by good will. The rich Böröcz Horváth Klári returns his love, and also Böröcz Horváth is willing to help the poorest family, the Bakos. Bakos Jóska, who was sent to serve the tough Böröcz Horváth as a payment, dies of an infected wound and the people in the village hold the teacher liable as well. Nagy István realises, that the abyss cannot be ceased, what is more, it is impassable. He breaks up with his fiancée and stands by the side of the poor.