The series displays the first arrival of a man to his new home after having been brought there by his new mistress. She happens to be eager to play with her new toy, and so she quicly undresses and ask him to follow her in her bedroom. The set then focuses on the sexual interaction that follows.
In this story, humans are genetically engineered to improve some of these main attributes: SIZE, BEAUTY, HEALTH/AGILTY, INTELLIGENCE. But we all know that nothing is gained in exchange for nothing, so when some of the attributes are artificially improved, the other attributes are diminished.
The result: gigantic beautiful idiots, tiny geniuses, and everything in between.