From the liner notes

Nearly a thousand miles away from their beloved Moscow, Chekhov's Three Sisters love in virtual exile. Olga (Jeanne Watts), a schoolmistress, attempts to support her siblings and the home that is the sole legacy their late army officer father has left them. Masha (Joan Plowright) finds relief from her empty marriage in an affair with a passionate young army colonel (Alan Bates) stationed nearby. Irina (Louise Pernell), the youngest, wills herself to return the affections of an ardent suitor in the hopes that he'll whisk her off to the city before it's somehow too late. Intoxicated by yesterday's triumphs and heedless of tomorrow's disasters, The Three Sisters are left to sift through the debris of their shattered dreams on the eve of social and political upheaval that will transform Russia forever.