To support her husband through financial difficulties, Mio becomes a clerk at a company run by Ozawa. However, her husband Sosuke is addicted to affairs and looks down on the devoted Mio as "incompetent." In despair, Mio chooses the path of "mistress secretary with ten times the salary" offered by Ozawa, drowning herself in an immoral affair. Eventually, Ozawa acquires Sosuke's company. While her husband, having lost his status, grovels in dogeza, Mio's position is reversed, and as Ozawa's mistress, she now looks down on her husband working in the same office. A story of lust, revenge, and rebirth, drenched in a sense of immorality.
