Marta (Jana Brejchová) and Viktor (Vlastimil Brodský) celebrate the tenth anniversary of their wedding half-heartedly. They both think they don't suit together. While visiting Marta's friend Alena (Iva Janzurová), who just got married for the third time, they learn an interesting thing. It was a computer which selected a husband for Alena and she claims she is happy. The couple gets off after certain hesitation to a cybernetic institute, where the computer tells them that living together is a risk for them. At the same time the computer selects them ideal partners - Mrs Tuchlová, a doctor for Viktor, and Petr Karát, a music composer for Marta. By a coincidence Viktor and Marta meet wrong people.
| Actor | Role |
|---|---|
 Vlastimil BrodskýNot listed | Not listed |
 Jana BrejchováNot listed | Not listed |
 Regina RázlováNot listed | Not listed |
 Josef BláhaNot listed | Not listed |
 Iva JanžurováAlena | Alena |
 František PeterkaNot listed | Not listed |
 Vladimír MenšíkNot listed | Not listed |
 Stella ZázvorkováNot listed | Not listed |
| EEva JirouškováNot listed | Not listed |
 Stanislava BartošováNot listed | Not listed |
| BBožena BöhmováNot listed | Not listed |
| LLucie ŽulováNot listed | Not listed |
 František FilipovskýNot listed | Not listed |
 Jiří LírNot listed | Not listed |
 Václav TréglNot listed | Not listed |
 Mirko MusilNot listed | Not listed |
| KKarel HovorkaNot listed | Not listed |
 Darja HajskáNot listed | Not listed |
| JJiřina BíláNot listed | Not listed |
| ZZdeňka BalounováNot listed | Not listed |
| IIvo HrdinaNot listed | Not listed |
| NNina ZvjaginaNot listed | Not listed |
| AAnna ŠtrosováNot listed | Not listed |
| VVilemína Nejedlová-SkokanováNot listed | Not listed |
| RRenata BauerováNot listed | Not listed |
| SSlávka HamouzováNot listed | Not listed |