The story opens in the peaceful Glen St. Mary before the outbreak of the First World War in nineteen fourteen. Rilla Blythe, the youngest daughter of Anne and Gilbert Blythe, is a fifteen-year-old girl consumed by thoughts of parties, pretty dresses, and romance. While her clever siblings and friends prepare for college, Rilla lives for frivolous pleasures and resents being treated like a child.
Her sheltered world shatters overnight when Britain declares war on Germany, and her eldest brother Jem immediately enlists. As the conflict escalates, the idyllic community is plunged into sorrow and tension. Rilla undergoes a profound inner transformation, discovering courage and capability she never knew she possessed when she unexpectedly adopts an orphaned war-baby.
The narrative follows her daily struggles as she manages the household, leads the Junior Red Cross, and cares for the baby while coping with the constant dread of casualty lists. Meanwhile, other young men of the Glen, including her close friend Kenneth Ford, leave for the front lines. Walter Blythe, tormented by a sensitive imagination and his own dread of the physical horrors of combat, eventually overcomes his internal conflict and enlists to save his self-respect. Rilla endures heartbreak, learns the true meaning of duty, and matures from a vain teenager into a steadfast young woman. The novel concludes with the community united in sacrifice and hope, awaiting a dawn that will bring peace and the return of their loved ones.
