Based on a short story by noted Czech Science fiction writer Josef Nesvadba (who co-wrote the screenplay to the excellent Zitra vstanu a oparim se cajem (Tommorrow I'm going to wake up and scald myself with tea) among others), this movie is about a criminal who forcibly switches, via an operation, faces with a priest. The result is a change in both of their behaviors to suit their new appearances. In conclusion however it is shown that this is just a transitional phenomenon the reality of peoples natures is not proven to be changed by having a different face. Sound familiar? Was this the source for the John Woo movie Face-Off?