A young Jewish man in a concentration camp has his life saved when executioners realize he owns a Persian book. Brought before a camp officer who wants to learn Farsi, Gilles agrees to teach him despite not knowing a word of the language.
1942. Gilles, a young Belgian man, is arrested by the SS alongside other Jews and sent to a concentration camp in Germany. He narrowly avoids execution by swearing to the guards that he is not Jewish, but Persian. This lie temporarily saves him, but then Gilles is assigned a seemingly untenable mission: to teach Persian to Koch, the officer in charge of the camp's kitchen, who dreams of opening a restaurant in Persia (Iran) once the war is over. Gilles finds himself having to invent a language he doesn't know, word by word. As the unusual relationship between the two men begins to incite jealousy and suspicion, Gilles becomes acutely aware that one false move could expose his swindle.
