Misao Oguri moves in with her husband's parents after marriage, and family life seems harmonious—except her father-in-law gets visibly hard whenever he sees her. He finally begs her to relieve him, even with his wife nearby and her husband asleep next door. Claiming he cannot finish with a condom, he penetrates her bareback and creampies her despite being told not to. One load is nowhere near enough for the nearly sixty-year-old sex fiend, who secretly unloads ten times in this family-affair fantasy.