Released from a concentration camp after the war, Aron Blank looks for and eventually finds the only surviving member of his family, his son Mark, who he was forced to abandon when Mark was only two years old. Working first in the black market and later as a Russian interpreter, Aron tries to rebuild a normal life for himself and his son in East Berlin. Decades later, with Mark lost in the Arab-Israeli war, Aron tells his story to a young interviewer -- the flow of his poignant narrative occasionally interrupted by their brief exchanges, which are peppered with humor. -- The Boxer offers a rare glimpse into Jewish life in Germany after the war.