A new office lady at a lingerie company gets caught in the obsessive nipple torture of her boss, who has a strong fascination with nipples. As her sensitive nipples grow even more responsive, the film realistically captures her daily secret rituals—touching, rolling, and licking her nipples in masturbation. With each passing day, her nipple sensitivity intensifies, vividly showcased through extreme close-ups that convey both her embarrassment and pleasure. This erotic work meticulously documents how, under the boss's relentless torment, she gradually becomes dependent on nipple masturbation.