Sara considered John's offer and asked "can I do what do I want with this?" and John answered: "you can do what do you want... to you" he specified.
So Sara, first of all, touched her husband wedding dress with the medallion and became a perfect copy of him as a young man.
John giggled and said "you're great! I know you also wanted to try how it was to be me since i've to stay as you for some hours..."
Sara nodded and without saying anything she (now he) approached her former husband (now his wife) and started to touch her tits and trying to take off her clothes. John was excited from this but stopped immediately her actual husband. "You've forgotten I've periods... you've allways said me you couldn't have sex during periods..." and Sara laughed "I lied" then they take off their clothes and Sara fucked John.
They stopped when Sara cum into John. John surprising had to admitt that she didn't reach orgasm and Sara giggled explaining that during their long coniugal life he had reached three or four times, and simulated all the others.
While this could get upset best part of men, John, being now a woman and knowing now how it is having sex with pussy, laughed with her beloved Sara.
They lyed on the bed and John felt asleep with a smile on her face. So Sara have time to think and consider things... He had pass a life as a woman, hating to be one and struggling for not being male. He allways wanted a thing like this happens and never admitted nor thinked it wuld be possible.
Now he had the possibilitiy of a revenge on her life, who matters if this cost John's happiness.
So, while John was sleepping, he went to the basement and searched for their collection of old newspaper.
She found a New Tork Times with the news of McKinley elected US president in 1900. She also take har smartphone and the medallion, and let the three things touching together.
Suddenly the world started changing and going back into the years, fromo 21st to 20th century.
their home disappeared and was replaced from a farmer house.
For some reason John and Sara were the only two people of our century, being transported in the past, in their new bodies. Their clothes changed to ba more appropriate to their condition and time.
Sara, wearing male farmer clothes, decide to bury the medallion.
Then he came home and approached his wife, starting fucking her whn she was allredy sleeping.
She woke up immediatly and when with a bit of confusion understood what her husband was doing prayed "please stop, stop!"
But nothing. he continued raping her as long he wanted.
When all finished, John crying asked "why did you this to me?" but he didn't answered. She asked again "where is the medallion? I want again my old body. This time Sara laughed "I've sold it" lying. "what?!? But I don't wanto to stay a woman forever!". Then Sara anwered "well? I never wanted but I had to stay and I've respected you all my life. Now is your turn". Jphn tried to resist "no way I'll respect you after this!", but Sara laughed "o, yes, you haven't noticed yet, have you? Look at hour house... I've change the time... this is november 1900... You'll stay a woman, you'll respect me, obey me and give me how much sons I want. We're alone with no contacts now. I'm the only one you have now. And I am the man. Now, wear a dress and start cook for dinner, woman".