Instilled with the spirit of patriotism after her teacher reads to her the story of Joan of Arc, Marie Yarbell goes home, persuades her father to enlist and then organizes a "military company" comprised of her playmates.
Dolly lives with her aunt, who is a seamstress. The child is sent home from school because she has been naughty, and finds her aunt in the act of making a Red Cross costume for a huge mechanical doll. The doll can walk and talk and excites Dolly's interest intensely.