A battered houseboat on the Thames provides the setting for this romantic British comedy. Two newlyweds rent the leaky floating home. The trouble begins when the husband decides to move the scow to a better location. The rickety barge disrupts river traffic. Next the two get lost in a fog bank. When it finally lifts, they find themselves in France. Fortunately, their landlord's yacht is moored nearby and they are able to borrow some petrol. The landlord bets that he can beat them across the Channel with his yacht. The race begins. The yachtsman gets terribly drunk and his cannot stay on course. The newlyweds win the race.