Charlie Drake stars as a hapless sailor forced to disguise himself as a woman when his ship is commandeered by disgruntled WRENs. Having been denied the opportunity to serve at sea by the admirals of the Women's Royal Naval Service, the women decide to take matters into their own hands by taking over a frigate and sailing it out to sea on their own. Accidentally in the midst of it all is Charlie, who must find a way to blend in or else end up a victim of the women's protest.