Ruka, a highly capable married secretary, is respected by the company president. However, one day, the president's son, who had his eye on her body, falsely accuses her and forces himself upon her, leaving her helpless and unable to refuse. With her weakness exposed, Ruka is trained and manipulated both at work and at home, gradually succumbing to pleasure. With her face bright red and having been brought to the brink of death by pleasure, the once chaste wife is replaced by a life of pleasure, becoming the president's son's personal slut...