Milada Dvořáková is about to get married to her business partner Dub, a gas station owner. When she catches him hugging his secretary, she breaks up with him. She sets up a rival company, ŽUB (Women at Gas Stations), and employs only single women. Dub also gets into the competitive fight...
Czech-American professor Johny Novák takes over his father's inheritance. The estate reveals that Johny is the father of a girl who lives with her mother Helena Strnadová in Prague, where Johny had stayed eighteen years earlier. Johny's father did not approve of his love and so he withheld Helen's letters, but he sent money to Helen's aunt for the child. Johny intends to visit Helen and her daughter with his friend Jimmy Sládek and informs his aunt about it by telegraph...
When Vilem appears in the road with an unconscious young woman, it disturbs the peaceful life of three generations of the Balvínova family.
