This week sees the new hosts of 3-2-1 Contact gather at the Blue Sky Café in Montclair, New Jersey. David Quinn and his French friend, David (stress the last syllable), wonder why Maxine the waitress uses that cryptic luncheonette lingo.

In France, Mary and Chantal discover sheepherders relaying messages to each other–by whistling.

Mary and Frenchman David go to Wyoming, where they see several native tribes share common hand signals.

FILM INSERTS: Signs are an international language; ways to say hello; common body-language signals.