Misa Yuuki lived happily with her husband, Shoichi, who ran a factory and business, supporting him as he built their comfortable life. One night, Shoichi suddenly vanished. Desperate to find him, Misa discovered several notes left behind in his journal, one reading, "Riot outbreak! Head to the mine immediately!" She traveled to a remote mine on Japan's southernmost island, only to be captured by disgruntled workers angry at her husband's management. Forced into labor, her elegant body was soon violated by their grimy, sweat-soaked hands—transforming her into a helpless sex slave.