Pur is a story of Purim-spiel plays staged by small groups of Jewish dissidents during the soviet regime, when all expression of Jewish culture was strictly forbidden. Rare archival footage shows these young men and women crowded in small apartments across Moscow and Leningrad, rediscovering the old but long-buried story of Megillat Esther. Using the tale of the foolish Persian king and his evil adviser, the dissidents expressed their criticism of the oppressive Soviet regime and its foolish and evil leaders. Every one of them knew that simply participating in this amateur show could lead to lifelong imprisonment, or worse.