After WWII Comisarul Moldovan spent years as a political prisoner of the communist regime. The favorite entertainment of the Russian Colonel in charge of the prison was to have the inmates play Russian Roulette. Only his unbelievable luck and survivor spirit helped Moldovan live through his detention. Out of the prison the ex-policeman joins an international Russian Roulette illegal gaming circuit. In late 70's faith brings him to a Central European town where Goldberg, an old acquaintance of his is organizing an "improved" version of the game where two opponents are shooting each other. Step by step Moldovan meets lots of familiar faces, both friends and enemies. It looks like the whole Bucharest's underworld from the 40's chose to meet here.

The movie is based on a true story from the end of WWI, in Transylvania. A nobleman who owned some land in Transylvania returns home to find a part of his fortune burned to ashes during late 1918 when power was trasfered from AustroHungary to Romania. Looking for revenge, he ordered the killing of innocent Romanian peasants from a neighbouring village, which he suspected to be guilty for the losses he suffered. A Romanian officer from Romanian Transylvanian Volunteers Corp, decides to help the villagers to face the menace of the nobleman

Officer Moldovan must solve the case of a robbery. Credit Central Bank was robbed fast and hard by a gang of professionals. Moldovan is trying to catch the man behind Rica Pasarin, the gang leader, by using his brother, who is a pickpocket thief.

"Revansa" (Revenge) appeared not so long after the preview movie of the series, "Un comisar acuza" (The Police Inspector Calls). In this sequel we meet up with police inspector Tudor Moldovan, once again, who wasn't actually killed and who has returned to put an end to Paraipan's actions once and for all. When Paraipan kidnaps Moldovan's kid, the police inspector makes up his mind to punish Paraipan and his bosses and to finish off the fascist movement, lead by Zavoianu and his allies. Together with the communist that fight to gain power, Moldovan takes out his enemies one by one.

The Iron Guard, also known as Legion of Archangel Michael, was a Romanian nationalist and patriotic movement of extreme right; as such, after it rose to power, it supported Nazi Germany and started a fierce campaign of retaliation against its political enemies. As such, in the night of November 26-27, 1940, the Death Teams executed forty political prisoners in the Jilava prison (in the movie, named "Viraga"), and next day, other two Teams arrested and shot the former minister Virgil Madgearu and the world famous historian Nicolae Iorga. To squash down the political outcry, the Police Prefect Stefan Zävoianu conveniently assigns the cases to a commissioner from the "Morals Division" (prostitution, thieves), Tudor Moldovan, hoping that he will fail to get to the bottom of the case. However, Moldovan has communist sympathies, so he quickly comes under the influence of the Bolshevik Pîrvu, who had escaped during the Viraga...

A continuation of a story started in the drama "With Clean Hands" (1972).