The Aunt reveals to Ida that she is in fact Jewish and that her mother. father and brother died during the Second World War (the film is set in the Sixties). The two women go on the road with the intention of finding out exactly when and where Ida's parents died. Both Ida's naivety and her Aunt's cynicism come out very clearly as they are confronted with traffic cops, seedy boarding houses, jazz joints and finally with the man who murdered Ida's parents and stole their farm from them.
The revelation of the truth about Ida's parents' death has a quite different effect on both women: Wanda becomes increasingly depressed and boozy, while Ida becomes withdrawn and sad. The one source of comfort comes in the form of a jazz musician who takes a shine to Ida and who is at first rebuffed by her. I won't give away too much of the plot in case you want to watch the film yourself on DVD (I watched it at the cinema some months ago!). The film isn't entirely sad; there are a couple of funny moments and the two women do share some happy times looking at old photos.
The film is beautifully shot in grainy black and white, the acting is superb and the sense of place and of suspense are both very powerfully conveyed. The only weaknesses of the film are that it is rather slow moving and you sometimes have to put in a bit of effort to work out exactly what is going on. But once you adjust to the fact that this not a mainstream type of film it is a very rewarding watch.