A charming romantic comedy with Fred and Emily Hill (Henry Kendall and Joan Barry) inheriting a fortune that gives them the opportunity to shed their boring existence in London and live a life that until now they could only dream about. So together they decide to book a world cruise; something they had always wanted to do but could never afford. With all their troubles behind them, or so they think, they embark on their voyage without a care in the world. But it is a very different life on board a cruise liner from the one they've been used to at home. The people are different... they're not so friendly, and some are so snooty they don't even talk. But undeterred they make the most of their time on the high seas and cocooned in their new life of privilege find themselves getting that romantic feeling again, although the results of this long forgotten pastime lead to comical consequences.