Tom is out shopping for a pair of jeans, then finds a tiny pair of black thong panties hanging the change room. Because he is a woman trapped in a man's body, he slips the tiny thong up and puts it on, finding out that it changes him into a woman. He then finds out that if he puts on another woman's clothes, he changes into that woman, so he is able to see what being a woman is actually like.
He enjoys the pleasures of being a woman in a hotel room, trying out a vibrator and reaching an orgasm, which he finds is very sexually fulfilling, so he takes the tiny thong with him, buys some clothes at a thrift shop, then goes to another city and ends up having his vehicle stolen, which puts Tom, now Tommi, in some very compromising positions.
Tom is able to find out what life as a woman is about, mostly all in one day, giving some guys fellatio, then having a lesbian affair with a couple of girls, and actually having sex as a woman.
Follow Tom in his escapades and his tribulations. Tom ends up doing the right thing due to his wife explaining things to him, although Tom is a bit confused, but he knows that his choice is the right thing to do.