Poland, 1948. 

Deep within a darkened room, perhaps that of a monastery, a monk takes an ageing letter from his habit and starts to read. The letter, written one year ago by a 24-year-old woman, Kaska, entreats the monk to see her. 

He thinks back, remembering the night the troubled woman, Kaska came to him in Klaztoru's monastery, begging him to hear her sin, her very great sin, as it is told he is the Confessor, one who can take sins and make them his own. 

Over the course of one long night, the woman recalls another long night, seven years before in a Nazi holding cell when she sat with the fated to die, Zofia Karas.  Those wartime events and her conflicted relationship with Zofia Karas haunt her.  With every word she seems to blame and hate the girl, yet unable to let go, bound and forever damned by the part she played in that girl’s fate. 

As Zofia and Kaska’s story unfolds, it unsettles the great Confessor, touching on his own wartime past. Shadows of that past, of how and why he became entrusted as the keeper of sins, come back to him. As Kaska’s sin is at last revealed the monk is forced finally to remember what he has long denied - the truth of himself. 

But is it only confession of truth that can bring atonement?  Or can your mortal soul be saved by a lie?