In 2020, a company health checkup is held with mixed male and female employees participating. The story focuses on Megu Mizumori, a friendly, older-sister-type woman from the management department. During her breast cancer screening, she appears reluctant and dissatisfied. Forcibly undressed, her lush G-cup breasts are revealed. Holding in daily stress, her soft, bouncy tits glisten slickly as medical gel is applied, highlighting their firm elasticity. During urine testing, her slightly reddish pee indicates she's on her period. When she hesitates to remove her underwear, staff forcefully yank it off—revealing shockingly plain, oversized panties. Blushing, she protests, "I don't normally wear underwear like this!" She's then laid on her back for a gynecological exam, legs spread wide in a humiliating spread-eagle position. As the doctor inserts fingers into her uterus, she moans in arousal: "Ah... Nnnn." When the examination ends, the male employees erupt in loud applause. In the end, she defiantly shouts, "This is ridiculous! I'm suing!"—only to be overpowered by the doctor's huge cock, crying out "Annn!" as he cums deep inside her.