1950's nautical comedy starring John Gregson and June Thorburn as a newlywed couple embarking on a hastily planned honeymoon on board a yacht, the 'Turtle'. Tony Hudson (John Gregson) asks his new wife Jane (June Thorburn) to go on a cruise on to France the ageing yacht 'Turtle'. The yacht's skipper is the cantankerous Dudley Partridge (Cecil Parker) an important customer of Tony's. Along with the rest of the crew the newlyweds encounter a series of hilarious mishaps on their trip which leave them all at sea...