A young wife with big breasts who lives with her husband and brother-in-law is dissatisfied because, despite being newly married, her brother-in-law is there and she can't have sex to her heart's content. Perhaps she had an opening in her heart, as she is attacked and raped by a rapist in an elevator. Her brother-in-law watches, but instead of helping, he becomes excited. Taking advantage of the fact that she cannot tell anyone, the brother-in-law plays with his sister-in-law's beautiful, white big breasts behind his brother's back, using them as his plaything.