It's 1912, and protagonist Helen Fox is a factory worker living in New York's tenements. When tragedy strikes in the Triangle Shirtwaist Factory fire, Helen is seduced by the Suffragist cause and is soon immersed, working alongside famous activists.

As Helen's involvement with the cause deepens, she encounters myriad sources of tension that test her estrangement from her husband, who is blindsided by his wife's sudden activism; ostracization by neighbors; unease at working side by side with wealthier suffragettes; and worry about her children as she leaves them to picket the White House in Washington.

The narrative spans World War One and concludes with the triumph of 1919. In a time when the obstacles for women, from any background, were insurmountable, Helen discovers her voice as an independent woman and dreams of equality in a male-dominated society.