Alien Test Procedure (An Alien Experimentation Story)

All Alison wanted to do was sit on her roof and stargaze, but a ship of extraterrestrials have other things in mind.

Alison is taken from her home and strapped down to an examination table, where strange creatures tell her that they're experimenting with interbreeding between the species, and Alison is their first test subject. Alison is given no other choice but to comply.

This 4200 word sexually explicit story includes aliens and impregnating machines.