Your classmate is like your family. Maybe even more important than that. A group of schoolchildren, Jewish and Catholic, declare their ambitions: one to be a fireman, one a film star, one a pilot, another a doctor. They are learning the ABC. This is Poland, 1925. As the children grow up, their country is torn apart by invading armies, first Soviet and then Nazi. Internal grievances deepen as fervent nationalism develops; friends betray each other; violence escalates. Until these ordinary people carry out an extraordinary and monstrous act that darkly resonates to this day.

Polish playwright, Tadeusz Slobodzianek, confronts his country's involvement in the atrocities of the last century and follows the one-time classmates - amidst the weddings, parades, births, deaths, emigrations and reconciliations - into the next.