A ship is seen flying planet to planet as disconnected voices discuss conditions not meeting criteria.

Finally they come across Earth and how it meets their research criteria. They approach a normal suburban neighborhood and pick a house. Upon scanning they discover a couple having sex. This intrigues them and they watch. They like what they see, but it ends too soon so they decide to increase the libido of the participants.

Meet our protagonist Aaltean

and his partner Zeeona

as they probe their first subject.