In Paris Mildred White becomes romantically involved with both Derwent Ainsworth and Dr. Mario Martinez. She prefers Derwent, but when he leaves suddenly to see his dying father, Mario convinces Mildred that he has deserted her. World War I begins, Derwent returns for Mildred, but upon learning that she is leaving Paris with Mario, he enlists in the army. Mildred, learning of Mario's deception joins the Red Cross to be near Derwent. When he is blinded in battle unbeknownst to him Mildred assumes his care. Their love renewed, though he is unaware of her identity, the two soon marry. Mildred then prevails upon Mario to perform a special operation on Derwent's eyes. His vision restored the pair restate their love.