His son's modest and ladylike wife has been acting strangely sexy lately... He investigates her secret... and is shocked! While her husband is away, she drags a middle-aged man into her house, licking all over her body! What's more, she has an ecstatic look on her face, and is trembling with joy! What a shame, his son's wife is a total pervert! He can't just leave this alone... so the father-in-law knocks on his son's wife's door...