Young musician Zhenya Kovalchuk falls in love with aerobatic pilot Yulia. The feeling is mutual, but Yulia cannot bring herself to reveal her feelings to Zhenya. Then the famous, but not yet elderly, Doctor of Science Kressovsky, who also hopes for Yulia's affection, stands in his way. The two suitors clash with their swords, and the duel ends with the doctor being wounded. The doctor intrigues, and Zhenya faces expulsion from the institute.
| Actor | Role |
|---|---|
 Alexander KaletskiZhenya Kovalchuk | Zhenya Kovalchuk |
| VVitaliy DoroshenkoAlik Larin | Alik Larin |
 Sergei Gurzo Ml.Vanya Samokha | Vanya Samokha |
 Yelena BratslavskayaYulya Yatsenko | Yulya Yatsenko |
 Natalya VorobyovaLena | Lena |
 Irina GubanovaOlga Viktorovna | Olga Viktorovna |
 Viktor BaykovYegor Frantsevich | Yegor Frantsevich |
 Igor DmitrievKim Yermilov | Kim Yermilov |
 Leonid BykovIgor Kresovskiy | Igor Kresovskiy |
 Sergei FilippovArkadiy Petrovich Bilonos | Arkadiy Petrovich Bilonos |
 Aleksei SmirnovNot listed | Not listed |
 Yurii TymoshenkoSurgeon | Surgeon |
 Boryslav BrondukovPolice Sergeant | Police Sergeant |
 Mykola YakovchenkoKovalchuk's Neighbour | Kovalchuk's Neighbour |
 Georgi GeorgiuNeighbour | Neighbour |
 Malvina ShvidlerZhanna Sitnikova's Mother | Zhanna Sitnikova's Mother |
 Lyudmyla SosyuraNina Petrovna Tishchenko | Nina Petrovna Tishchenko |
| VViktor PolishchukViktor Petrovich | Viktor Petrovich |
 Aleksandr AnurovNot listed | Not listed |
 Viktor StepanenkoNot listed | Not listed |