A heartbreaking account of loss and resilience, drawn from the true story of the Himeyuri corps of student nurses during WWII. San and her best friend Mayu attend a girls' boarding school in Okinawa, but their education is cut short when they, along with the other students, are conscripted to support the war effort as assistant nurses. Dispatched to the front lines, the girls face dangers beyond just enemy bombs dropping from above. Forced to work in the terrifying caves of a field hospital, San longs to wrap herself and her friends in a protective cocoon. Yet, invisible threads of affection cannot withstand the surrounding carnage, and day by day, more students die. Exhausted by starvation and grief, what will San and her surviving friends do when ordered to find their way home through fields ravaged by total war?