In a monastery cut off from the world, the monks run a clinic for the possessed. One day, a young policeman Marek comes to the convent. Posing as a clergyman, he penetrates monastic life and tries to explain the recent, mysterious disappearance of several tormented inmates. It turns out, however, that there is no way out of the monastery.

In the 1940s, a small band of underground paramilitaries attempt to fight back against the Soviet-backed security ministry in post-war Poland. Determined to fight for their country's future, the group goes to extreme lengths to make their voice heard.

Story of life of Father Jerzy Popieluszko, the priest called "The Solidarity Chaplain", murdered by communist secret police.