You arrive for Christmas with your Mother-In-Law, the two of you are chatting and gently flirting when she confesses to you that she is living in a sexless marriage. A few days later when she is unpacking your wife's suitcase she finds a sex toy which she can't resist experimenting with - you walk into the bedroom to find her on the bed moving the toy frantically between her legs! After you both get over the shock and embarrasment you admit you and your wife never have sex either and you don't even know why you bothered to pack the toy. From there, it seems only logical that the two of you - who both miss sex badly - take this opportunity to give each other what you need. You kiss your way down your Mother-In-Laws body until finally licking between her legs, bringing her to a huge orgasm before she recovers to suck you off, taking your full load in her greedy mouth. A day or two later you find her alone in the kitchen, and are unable to resist repeating the experience - this is risky sex with your wife and her husband watching TV next door. Now time is running out as soon you will need to head home after the festive break, but before that happens you find yourself woken up one morning by her sweet mouth sucking you off yet again. She tells you that she has managed to find a way to send her husband and daughter out on errands so that you can spend the entire day fucking and sucking each other all over the house.... and that she wants to make sure you end the day both drained and covered in cum.