Witold Lisowski

A pastor and ethnographer visits a remote corner of 19th-century Lithuania where folk customs associated with the area's pagan past still have a hold on the population.

Jaruga, the chief of the local branch of Security Office leads a fight against a Home Army unit led by a man known as Boruta and begins to suspect that one of his men was planted by the insurgents. Another Security Office agent arrives to uncover the conspiracy and deal the final blow to Boruta.