The story opens in the serene world of Ingleside, where Rilla Blythe enjoys the carefree thrills of youth and society events. But as whispers of war grow louder, her brothers Jem, Walter, and Shirley enlist, bringing fear and uncertainty to the family. Initially immature and reluctant, Rilla begins to change after taking in a war-baby, which forces her to accept responsibility. Through trials and reflections, she grapples with her evolving identity and emotions amid a world in turmoil. Part 1 charts the beginning of the war and Rilla’s journey from girlhood to early maturity.