Tsubasa, a clean freak, lives peacefully until construction workers from a nearby road project come by asking to use her bathroom. Her fastidious boyfriend Masaya refuses, but the workers force their way in and defecate in her toilet. The next day, the crew returns while Masaya is away. Annoyed by Tsubasa's scolding, they grow irritated and gang rape her. The traumatic incident ignites Tsubasa's fury.