The Simpsons (1989 - Present): The Crepes of Wrath

Bart is sent to France as a foreign exchange student and is forced to live with two slave-driving French winemakers. In his place, the Simpson family takes in Adil, a student from Albania, who's actually a spy stealing the Springfield Nuclear Power Plant's secrets. Bart escapes his tormentors' vineyard and manages to speak enough French to tell the authorities. He returns home a national hero.