Three high school girls from the soccer team find themselves unable to escape their coach's sexual harassment. As the abuse gradually escalates, it begins to change the girls in profound ways. Forced to strip from their athletic wear down to nothing but fundoshi loincloths, they endure increasingly degrading treatment. Those who perform poorly are made to stay after practice under the open sky, their fundoshi tightly wedged between their big asses, thrust into unimaginable situations.