Elyot and Sibyl are being married in a big church ceremony. Amanda and Victor are being married by a French Justice of the Peace. Both couples go to a hotel on the same day and are put in adjoining rooms with adjoining terraces. Things go fine until Amanda sees her former husband Elyot on the adjacent terrace. While they both pretend to be happy, both make plans to leave, but their spouses do not want to leave as it is their respective honeymoons. So the other spouses each go down to the bar. This leaves Elyot and Amanda together and they reminisce. Before long, the sparks again fly and they both decide to leave together to the Mountains of Switzerland. They love, they bicker, they fight, they stop. Then it begins over and over. Then Victor and Sibyl show up at their chalet.
