Sumiko, wearing a cute light pink bikini, is stretching and meditating in her living room. An imposing woman in a mask startles her. Sumiko is powerless as the woman easily lifts and pile drives her to the floor. The powerful, mysterious intruder has her way with Sumiko and continually pile drives her skull into the hard floor only to wake her for another and another. Sumiko it brutally beaten for unknown reasons by an unknown assailant.