Mehed ei nuta (1968) by Sulev Nõmmik

Synopsis:
A group of sleepless nerds should be taken into sanitarium for hard-therapy. They are taken to a lonely island but no sanitarium is in sight. Suddenly turns out that the nurses have kidnapped the men and are about to give them the only useful medicine they need – fresh air and work. But the patients decide to disobey. There’s only one solution – to escape. The film is absolute cult in Estonia.