Laura Partridge (Judy Holliday) is a very enthusiastic small stockholder of 10 shares in International Projects, a large corporation based in New York City. She attends her first stockholders meeting ready to question the board of directors from their salaries to their operations. These are not the questions which the board expected to be asked of them, especially since they are all crooked, except for Edward McKeever (Paul Douglas), the current CEO who has resigned in order to take an advisory position at the Pentagon. Following the meeting, he bumps into Laura and offers to drive her home. On the way there, Laura displays her enthusiasm for being a stockholder, as a result, Edward takes a liking to her. With Edward in Washington, D.C., John Blessington (John Williams) and Clifford Snell (Fred Clark) establish their hold on International Projects. They see greater riches now that Edward has influence with the U.S. Senate, especially with the awarding of federal contracts; unfortunately for them, he is honest, and won't do their bidding. In the meantime, Laura continues to be a nuisance to the board. Blessington believes the only way to silence her is to give her a high-paying position with the company. The idea is for her to do absolutely nothing, but Laura has other plans. She begins to correspond with other small stockholders in the company, a problem for the board. They decide to use her influence on Edward and send her to Washington, D.C. to get contracts. Laura, now knowing their true intentions for her, has her own agenda, that is, get Edward back in charge of the company.