Both have the name Jadzia, besides the name they are also connected by a tennis racket. Jędruszewska is a champion of tennis courts, Maliczówna is an extremely charismatic owner of a sports store. Meanwhile, there is a fierce battle between two competing Warsaw companies selling sports equipment. The convergence of names and misunderstandings cause that the representative of the rival sports shop Jan Oksza confuses Jada. He tries to get the tennis champion to play their company's racket, but Jan takes Maliczówna for the champion. In the meantime, he acts as a sculptor, his friend. Among the gags and numerous misunderstandings between Jadzia Maliczówna and Jan Oksza germinate the feeling that eventually connects the two feuding companies.
| Directing | Mieczysław Krawicz | Director |
| Writing | Jan Fethke | Screenplay |
| Writing | Carl Heinz Jarosy | Idea |
| Writing | Emanuel Schlechter | Idea |
| Writing | Ludwik Starski | Dialogue |
| Sound | Alfred Scher | Original Music Composer |
| Camera | Zbigniew Gniazdowski | Director of Photography |
| Art | Adam Knauff | Set Decoration |
| Production | Stanisław Szebego | Production Manager |
| Directing | Aleksander Suchcicki | Assistant Director |
| Sound | Stanisław Urbaniak | Sound |