Lea is a teenager born and raised in Japan. Her mother is Chinese, her father American. She speaks English, Mandarin and Japanese but isn’t sure which of them is her mother tongue. Karolina lives in Boston but grew up in several countries and speaks a bunch of languages. Her English is perfect but she doesn’t feel completely at home in it, or in American culture. Welcome to the world of third culture kids, a fast-growing group of people who fit in everywhere and nowhere.