One night, while he was at the opera, young ship tycoon Stephen Herrick (Edmond O'Brien) accidentally meets an unusually full young woman named Dot (Lucille Ball). The next day, while he is still dizzy from their dizzying meeting, she enters his office to serve as his secretary. Despite her audacity - or because of it - Stephen is inevitably attracted to the lively Dot, which is a big problem for Dotina's beauty, a sailor beast named Coffee Cup (George Murphy).