Akito spends his summer vacation in his rural hometown with his busty sister-in-law Miyuri and the seductive widow Sayoko who raised him like a son. After a slip of the tongue his hidden feelings for both women are revealed, leading to passionate incestuous sex with deepthroat, paizuri, raw pounding missionary doggystyle until he floods their wombs with overflowing creampies. The episode also introduces the beautiful Shinto priestess Jinno Sumire and her high school daughter Jinno Ai who join the forbidden summer fun