A self-employed couple, exhausted from life and work and struggling with their sex life, visited a psychosomatic clinic. But it was a horrifying place where a corrupt doctor, Ozawa, awaited them, disguising treatment as brainwashing into lewdness and sex training. With malicious medical consultations that exploited the cracks in their hearts, both husband and wife were brainwashed and trained. The wife, Miki, gradually transformed into a lewd woman, craving Doctor Ozawa's thick dick and taking it deep into her throat. Ignoring her husband's protests as he secretly watched in shock, she moved on to M-leg spread dildo masturbation and then fellatio in front of Doctor Ozawa. To the protesting husband, Ozawa coldly declared, "Miki-san is starting to awaken to real sex. You should wake up too! Now, have sex right here, real sex!" Contrary to the husband's joy that everything had gone well, Miki couldn't forget Doctor Ozawa's thick dick. Invited by Doctor Ozawa with, "It's not an exam, but how about dinner at my place next week to celebrate your recovery?" the couple visited Ozawa's home, where the husband learned Miki's true feelings. "Miki-san, choose. If you choose me, you'll live as my sex slave for life. Now, which will you choose?" "Doctor, make me your sex slave." The two engaged in intense slave sex in front of the husband. Miki reached her peak on Doctor Ozawa's thick dick.