So the crew of the starship Enterprise, which you know from the Star Trek universe, was captured by the Yagondir race. These humanoids from another planet are able to reproduce with people from indigenous terrestrial origin. The aliens enslaved the crew and took all the women on the deck of the ship. They then stripped them of their clothes to discover what they would have with them. They began to seduce gorgeous women from behind , much like a stallion protecting a mare during an intercourse.