American comedian Bob Hunter, on a luxury liner to France with French counterpart Fernandel, takes an interest in blonde diplomat Ann McCall while pursued by an even shapelier blonde, the mysterious Zara, who seems to be after something in Bob's possession. But he's only going to France to obtain rights to a new play...so what are Zara and her sinister boss after? The pursuit, amorous and larcenous, continues in Paris and escalates into a full-fledged comedy thriller.