You see your Sister-In-Law at a family reunion you are attending with you wife; she hasn't changed and is still as teasing and seducing as ever. Once she notices the effect she is having on you, your sister-in-law uses that to her advantage; showing more skin than appropriate and asking where her sister is; once satisfied with the answers, she seduces you into a guest room; using her body and naughty promises to get you rock hard as she strips and reminisces about the days you would empty yourself inside her daily. Once naked, you can no longer resist the desire to be inside your sister-in-law's taboo pussy, she pushes herself onto your cock and you feel it stretch around you; she begs you to fill her pussy with cum again...like old days; begging for the risky sex you once had, where every session could end in you knocking her up. You give your sister-in-law what both you and her desire, and fill her raw pussy with a large load of cum. You watch as your load drips out of her unprotected pussy as you both get dressed and prepare to mingle with the rest of the family...and your wife.