The fourth installment of the popular series! Under the guise of wanting to help the married women who applied understand the joys of womanhood by watching their lewd behavior and letting them experience the fun of games, a chaotic home invasion domino game starts when the husbands are out working! Will they be able to get 1 million yen by aiming for mission clearance while wearing revealing swimsuits for the first time and inserting a fixed vibrator? If they fail the mission, they'll be subjected to an immediate creampie penalty game!