When Fred Carpenter suggests to his wife, Sally, that they should take a boating holiday on the Norfolk Broads, she is filled with trepidation. Nevertheless she summons her courage & they & their bull-terrier Bill set off, with Fred at the helm of " Dogfish Three." Sally's misgivings are soon justified, as a series of disasters, human, nautical & canine, threaten to ruin their holiday. Then everything changes as they make friends with the boating fraternity & encounter the remarkable 15-year-old Rosie, whose family history stirs their curiosity & sympathy. As a result, Fred & Sally decide to support Rosie's efforts to better herself -- & are rewarded when she finds love & happiness.