The war is over, but Henry's battle has just begun.
When Henry is wounded on the battlefield at
Amiens
, he returns to the stationary hospital where he once again encounters Abbigail, the Bluebird nurse who has been his guiding light through the savagery of war. As Henry comes to terms with the physical toll exacted on him by the war, he struggles with the thought of returning home as a burden on his family. While Abbigail helps Henry recover in hospital, she finds herself facing an impossible choice: break her promise to her father and lose the family farm by remaining with Henry, or fulfill her promise to her father and return to marry John. On their journey back to Canada together, Abbigail wages her own personal battle with the decision before her as Henry agonizes over his conviction that he can never subject Abbigail to a life of caring for him. Following a reluctant farewell, Abbigail and Henry return to their respective lives in Canada only to be caught up in the Spanish Influenza pandemic that sweeps the world at the close of the war. As the first wave of the pandemic mounts, Henry rushes to see to Abbigail's safety. There, he will face the most difficult battle of his life. Can Henry become the man Abbigail needs him to be-even if it means he must help her keep her promise to marry another man?