The plot blurb on this page gets it wrong: During the Cold War, a local Polish officer and a young Soviet woman wedded to a Soviet officer are drawn together by music. The asymmetry between their countries' position and power are important to the plot, so I don't consider this mix-up trivial. Their affair attracts the attention of the military authorities precisely because of her military connections. Restrictions on the movements of Poles around the Soviet forces forces the couple to maneuver a fair bit to prosecute their affair. Indeed, one subterfuge to circumvent those restrictions lands the officer in trouble that seems disproportional to mere adultery. Although his commanding officers appear to have a modicum of sympathy for him, there is not much they can do in th face of the Soviets. The film is very well done for a melodrama but doesn't rise above the genre.