 It s 1939. The ebullient, playful Guido comes to town. He works as a waiter under the watchful eye of his uncle, an elegant man who is a Jew. Guido falls for Dora, a schoolteacher, whom he calls "princess" and courts by popping up at unexpected times. She dumps her fiancé to choose Guido. The film jumps ahead to the war s last months. Nora and Guido have a child, Giosué, and when Guido and the lad are shipped to a concentration camp, Dora voluntarily follows. Although the men and women in the camp are separated and a child is in mortal peril, Guido finds ways to communicate with Dora, to hide Giosué, and to convince the boy this is an elaborate game, a special contest to win a tank.