Grif Henderson, a professional photographer from suburban New York, is hired to accompany a group of American students touring France, and decides to take his wife Jenny and teenage son David along. Jenny books passage for them on an ocean liner, and a stay at a Riviera hotel, from Gilbert, a dishonest, shyster travel agent. On the ship, they are dismayed to be assigned bunk beds in separate, crowded rooms with many teenagers, and endure an emergency drill; there is little privacy.