A sister-in-law returns to the house where she lives with her wife and father-in-law. A wife who is appalled and a father-in-law who is a mixture of worry and no anger. I didn't understand the reason for their attitude... until I learned the true nature of this beautiful person. Without hesitation, the sister-in-law shows off her indecent body and innocently comes on to her. I felt bewildered by the suddenness of it all, but it didn't take long before I betrayed my wife... I found myself becoming more and more addicted to the charms of her sister-in-law.