Anne Shirley returns to Avonlea as a schoolma'am, full of ambitious ideals about shaping the minds and morals of her pupils. Right away, she is drawn into a flurry of local affairs, including a stormy feud with her eccentric new neighbor, Mr. Harrison, over a stray Jersey cow. Alongside her steadfast friend Diana Barry, Anne enthusiastically launches the Avonlea Village Improvement Society to beautify the settlement, much to the amusement of skeptical elders like Mrs.
Rachel Lynde. Complications arise when Marilla Cuthbert decides to adopt twin orphans, Davy and Dora. Davy’s endless mischief and untamed spirit test Anne's patience and force her to question her simplistic theories on child-rearing and education.
Meanwhile, Anne struggles with the realities of teaching, battling her own quick temper, especially after a disastrous classroom explosion that forces her to administer a hasty punishment to the sullen Anthony Pye. Despite these stumbles, her genuine kindness gradually wins over her pupils, most notably the sensitive, imaginative boy-genius Paul Irving. As the seasons shift, Anne navigates the trials of community projects—such as a hall painted a brilliant, unintended blue—and mourns her past while looking toward the future. Supported by her close friends, including a maturing Gilbert Blythe whose ambitions are turning toward medicine, Anne balances her literary daydreams with practical duties. The narrative unfolds through a series of picturesque vignettes, highlighting the quiet joys, gentle heartaches, and deep sense of belonging that define life on Prince Edward Island.