If you know about Pokegirls, you know that certain regular girls can threshold into pokegirls.
My idea involves a Tamer and his/her pokegirl..who is also his/her best friend, having thresholded into a pokegirl, and the drama and comedy that comes from it...neither of them liked each other romantically, but now he/she is her tamer, and of course, that means lots of taming. o3o
It's still rough, but I was hoping to do this....
As for the other plots, as just recently advertised:
Two best friends are caught in a savage storm together in a small shack/house in the woods? o-o
Two people stranded together on a desert Island?
A young man (16 or older) comes to work for an older, lonely woman, and when a storm starts to brew (Storm, Blizzard, Avalance, whatever.) he has to spend the night with her, and she takes advantage of the situation?
Please note that all of the Above can be changed to Any Pairing of F/F, M/F, Futa/F, Furry/Furry, Furry/Human, Human/Furry, Etc, etc.
In fact, I would encourage it!