May be becuase it's 4th area of the game but you may have some issues with comprehending it. Or not if you happen to be a sci-fi fan who can create a dozen of species in your mind in just a second. Anyway the Grand Xenozork has landed! His powers has ampiied because his predominance of the Empress. Now the next wave of nymphs must be conquered with Xenozork pheromones! Just keep attention - if the will be too strong the chicks will weirdo out and sound the alarm. Make them again until they will be too humid to resist. As for the gameplay your aim seem to be to combine the different colored pheromones in a way that will allow you to overcome and use all these huge-chested space amazons which you will meet to greatness.
Perhaps you are familiar with this busty babe. I guess, there was a game with a story line containing exactly the same animations. Anyhow, you can now look at them without a care,click on your mouse to proceed to the next scene.