A woman lives alone on the outskirts of a village in Russia. One day she receives a parcel she sent to her incarcerated husband, marked “Return to sender.” Shocked and confused, the woman has no choice but to travel to her husband’s prison in a remote region of the country in search of an explanation. So begins the story of a battle against an impenetrable fortress, a prison in which the forces of social evil are constantly at work. Braving violence and humiliation, in the face of all opposition, our protagonist embarks on a blind quest for justice.