On January 15, 1972, Leonid Pliouchtch, a Ukrainian mathematician who was unknown at the time, was locked up in a Soviet psychiatric institution and accused of dissidence. His wife, Tatiana, fought for his defense and contacted a committee of French mathematicians to help him. Led by Laurent Schwartz, they launched a three-year campaign to secure his release and succeeded in getting the USSR to back down on the issue.
| Actor | Role |
|---|---|
 Michel BrouéSelf : Mathematician & Trotskist Activist | Self : Mathematician & Trotskist Activist |
 Pierre LaurentSelf : Journalist | Self : Journalist |
 Pierre JuquinSelf : Syndicalist | Self : Syndicalist |
| MMathieu SchwartzNarrator (voice) | Narrator (voice) |