You have been a scientist quite a long time, and now you are quite rich and retired. You want to spend your days at your house in the country, where it is quiet and restful.
Your daughter, Kati, will not have it. She is an eighteen-year-old senior in high school, she never did obey you much, and she has always been a hassle. You have tried drug after drug on her to try to get her to listen. Recently you have found a drug that almost works, so you take it to your lab.
You begin to modify it, adding more of the key ingredients and removing some of the less important ones. When your daughter arrives home from school, very late as usual, you give her the drug you have made in some soda. You wait for an hour and then tell her she is going to be a good girl and move with you out to the country. You become very surprised when she says. "Yes master; I will go where you want me to. I am a good girl. I will do as you say, Master."
It worked! The drug has done all you wanted. You are surprised; usually your ... experiments ... do not work out as you plan. This one has, and she will always be your little girl!
"I will do anything for you, Master," she says and steps close to you, head bowed with those puppy dog eyes staring up into yours. She steps closer, pressing her nice C-cup tits into your chest. "I must please you and do what you say, Master."
"Yes, you should be a good little girl." You step back; perhaps this drug has worked too well. You know it has when she slips off her skirt and panties in one sweep.
"I will please you," she says and drops to her knees. "What are you doing?" you ask as she drops to her knees in front of you.
"I'm a good girl; I'm going to make my daddy happy. That's what good little Daddy's Girls should do." she says, pulling your pants and boxers down in one motion. "I'm Daddy's little girl," she says and begins to suck on your limp dick.
"Kati! W-what are y-you doing?" you exclaim as she sucks on your cock. You begin to get a hard on as she plays with your balls in her hands while she sucks you.
She mumbles something you cannot understand, her mouth full of stiffening meat.
"Oh Kati ... Yes! ... You are Daddy's little girl," you say, and she stops and looks up at you lovingly.
"I'm your little ..." she says, but you cut her off
