"Natsufuku no Shōjo-tachi" is set in a rural Japanese town during the summer of 1945, amidst the final days of World War II. The narrative centers on a group of young girls who are part of a local theater troupe, performing to uplift the spirits of their community and soldiers. The protagonist, Suzu Urano, is a spirited and optimistic girl who dreams of becoming a renowned actress. Alongside her are her close friends, each with distinct personalities and aspirations, who share a deep bond forged through their shared passion for theater.

As the war intensifies, the girls face increasing hardships, including food shortages, air raids, and the constant threat of danger. Despite these challenges, they remain committed to their performances, using theater as a means of escapism and hope. The story explores their resilience and camaraderie, highlighting how they navigate the harsh realities of war while clinging to their dreams and youthful innocence.

The narrative takes a poignant turn when the town becomes a target of bombing raids, forcing the girls to confront the fragility of life and the devastating impact of war. Their performances, once a source of joy, become a bittersweet reminder of the world they are losing. The series delves into themes of loss, perseverance, and the enduring power of art, as the girls strive to find meaning and beauty in a world overshadowed by conflict.

Key characters include Suzu, whose unwavering optimism serves as the emotional core of the story; her best friend, who provides a grounded and pragmatic counterpoint; and the troupe’s mentor, an older woman who guides the girls with wisdom and compassion. Through their interactions and individual struggles, the series paints a vivid portrait of a community grappling with the horrors of war while holding onto hope and humanity. The story concludes with a mix of tragedy and triumph, leaving a lasting impression of the resilience of the human spirit.