Bon Voyage, Charlie Brown (and Don't Come Back!) (1980)

Charlie Brown, Linus, Peppermint Patty, and Marcie embark on an adventure to France as foreign exchange students, joined by Snoopy and Woodstock. While the group is eager to explore a new culture, Charlie becomes anxious after receiving an enigmatic letter from a French girl inviting him to her chateau. Upon arrival, he quickly realizes that he may not be as welcome as he hoped. As the gang navigates their journey, they encounter both excitement and unexpected challenges in the charming yet perplexing landscape of France.