You're caught by the plant

Falling about twelve feet, you are caught by one of the tentacles inches from the ground. You try to struggle free but the tendril that held you at the waist was at least as thick as your upper thigh. It held you high in the air as other tentacles assaulted you. Smaller tentacles, the size of your wrists, wrapped slimily around your thighs, arms, legs and alarmingly, your neck. Even smaller tendrils wrapped around your cock and scrotum, gently caressing your involuntary erection. Another tentacle **** its way into your mouth, forcing you to drink a nectar that was...hmmm....delicious. You craved more as you tasted it all over your mouth and swallowed it all down. Unknown to you, the nectar contained an alien engineered retrovirus, designed to alter the DNA structure of all your cells to alien design. It also contained heavy doses of aphrodisiacs, driving your sex drive through the roof. Other substances render your mind open to suggestion and alien control.

The rubbing and massaging or your limbs began to relax you as the nectar took effect. You notice the plant guiding you. There was a slight pain at your perineum as a sharp tendril injected a serum that increases your genital sensitivity. The plant guided you, still held but tingling pleasantly all over, towards a lone woman on the ground. She was a slim redhead with milky white, freckled skin, and couldn't be more than 18 or 19. She had moderately sized, but seemingly growing breasts which were being kneaded and suck by two suckers. Two more, almost fully sized breasts sat below them. Her mouth was filled with a thick tendril, pumping fluids into her that was leaking from the rim of her mouth. She sat, legs spread akimbo by tentacles, covered in alien slime masturbating furiously.

The plant's intent was clear enough. It continued moving you towards her, whilst slipping its feelers from her cunt and mouth. It also released the masturbating hold on your genitals. The girl looked at you as you closed. Her wide green eyes pleading. "Please, please..." She quietly moaned.

Despite being incredibly turned on, you feel sick. You turned away but as you still closed, you realise the inevitable. "I'm sorry" you muttered.

The girl still looked at you, "No, you don't...ahhhh...hmmm...understand. I need you to.....ooooohh...fuck me...please fuck me."

That seemed to push the plant on as it suddenly surged you forward and slammed your erect member inside her welcoming snatch. She shrieked in momentary surprised but then began to buck and ride under the guidance of the tentacles. Her pussy felt amazing, it was like being sucked and fucking simultaneously as her inner muscles massaged your hypersensitive penis. Her snatch was soaking wet with alien slime and her juices, which intermingled with each other. Meanwhile, the plant has removed the tendril from your mouth and guided your mouths together. You kissed, tongue slithering with great pleasure against each other, as you both fuck and ride each other. You feel drawn to her breasts and began kissing and sucking the milk from them, causing her to moan and scream in ecstasy as her vagina milked your cock. You feel the tingling on your skin increase and notice it beginning to turn turquoise, but by now, you're beyond caring. The girl began to change too, her breasts have grown from a 32C to a 36D, all the while pumping out more milk (which you happily lap up) and her skin was changing too.

Suddenly, you feel a pressure on your anus. Knowing what?s about to happen, you clench tight but the tentacles soon pulled your legs open and began to slowly slither into your hole. The initial pain, however, soon gave way to bliss as the tendril massaged and stimulated your prostate directly. Simultaneously, the plant pushed itself into your partner anally, causing her to shriek in pleasure. Both of you came hard, shooting your semen uncontrollably into her. The mounting pleasure became too much for you and you begin to pass out. But not before you notice your new, athletic physique and blue skin with spots. You're one of them now.