A married woman, Sumire, married a serious and gentle husband with whom she had a relationship since college and felt happy in their ordinary daily life. However, her life was completely changed by her husband's boss. While her husband was away, she took advantage of her boss's position and forcibly twisted a swollen and veiny meat rod. Sumire, who continued to enjoy the pleasure she had never felt from her husband, gradually lost her ability to resist and began to seek pleasure and meat on her own.