Every night, the scent of a lyrical female drifts from the burning body of my sister who returns with mud. The adolescent brother estrus on the foolery of his unprotected sister and attacks her desires uncontrollably. Even though it is muddy, the older sister who initially resists incest with her younger brother also collapses reason when Ji ● Po is inserted, and the two siblings become two estrus beasts and copulate all night repeat.