When Yuta reunites with his old school friend Takeshi, he meets Takeshi's beautiful wife Yuka, who is apparently very enthusiastic about sex. Takeshi cannot stop bragging about how great marriage is, driving the sexually frustrated Yuta wild with jealousy. Yuta secretly goes to see Yuka and forcibly pins her down. Although she resists, his uncontrollable stamina makes her climax. He then keeps fucking and creampieing her five days a week, four times each visit. After twenty loads, Yuka finally finds that her husband can no longer satisfy her.