Toshio is a 41 year old company man. He is married to Kiyomi a woman he met while studying at the university. They have now been married for 17 years. They still retain a loving relationship, but there is no excitement left. Meeting up with a young man at a bar, he is introduced to the concept of cheating love. The young man will try to seduce Kiyomi. Toshio thinks that his lovely wife will not fall for such childish games. Time progress and before he knows it the young man begins to send pictures and sound files that could be Kiyomi having sex with young men. But Toshio does not believe it to be his Kiyomi, but strangely he feels excited about the possibility. Is Kiyomi really cheating on him? After 17 years of happy marriage?