Twenty-five-year-old Alice Paul returns to her native New Jersey after several years on the front lines of the suffrage movement in Great Britain. Nine states have already granted women voting rights, but only a constitutional amendment will secure the vote for all. To inspire support for the campaign, Alice organizes a magnificent procession down Pennsylvania Avenue in Washington, DC, the day before the inauguration of President-elect Woodrow Wilson, a firm anti-suffragist. On March 3, 1913, the glorious march commences, but negligent police allow vast crowds of belligerent men to block the parade route --- jeering, shouting threats, assaulting the marchers --- endangering not only the success of the demonstration but the women’s very lives.