Wanting to help her sick mother, Miku begs her uncle to lend her money for medical expenses. Her uncle promises to help her mother, but he tricks her and imprisons her in the basement! When she resists violently, he threatens her, saying, "You want to help your mother, don't you?" and forces her to do it! Eventually, she is tied up and trained to be an obedient slave who repeatedly climaxes with her eyes rolled back!