Based on the CG collection by Yolki Palki (ヨールキ・パールキ).

A woman homeless, with no possessions, not even a name, is offered a chance to perform in a traveling gallery designed to fulfill the darkest desires of men. Here she is given the name “Mary” and wakes up to her own masochism. On the final day of the gallery she meets her now beloved husband, Doctor Salvatore. As a member of the Salvatore family, Mary is expected to give birth to an elite child, but to give birth to a child of such high status can only be obtained by reaching the highest levels of sexual pleasure.