Teenage identical twin sisters, Melanie and Allyson Porter are 13 years old, and their only concerns are boys, boys and boys. Knowing they need to broaden their horizons and see the world, their parents send them to Paris during their Spring Break school vacation, to live with their estranged Grandpa Edward who is the U.S. Ambassador to France. Expecting a fun time with their grandfather, they instead end up living day-to-day via an itinerary with his no-nonsense assistant, Jeremy, since Edward is always too busy and has no time to spend with them. They also learn some harsh rules while staying at his swanky mansion, which includes no loud music, no jumping on the bed, and having to be dressed appropriately for dinner every night without being a minute late.