People all over the world, particularly younger people, have gone missing. The cause of this? A couple who are both mad scientists who own a large facility, have been kidnapping them. They'd erase their memories, then place them in customized rooms where they would achieve a certain outcome, usually through exposing them to certain things and always a brainwashing video played everyday three or four times a day, or even more.
One grad school drop out had been kidnapped and exposed to nothing but the Japanese language and Japanese female etiquette as well as being made to care for young robotic children the couple had created. Now she'd become the perfect Japanese mother and wife. A high schooler had been exposed to nothing but androids and robots. Now she believes she is one of them and acts accordingly, obedient and metallic. A former bodybuilder was exposed entirely to fast food ads, now he is one of the heaviest men alive. And that's a small sample.
All of these "children" wear a particular accessory/outfit based on the desired outcome. This accessory/outfit delivers a mind-numbing dose of endorphins that no one can resist. The robot girl has had antennas implanted into her head with a direct connection to her levels of pleasure and happiness. Every time she does something she is supposed to do (such as follow orders without questioning, speak like a robot, walk like a robot, think like a robot, behave as a robot is supposed to, etc,.), a surge of endorphins rushes through her, eventually conditioning her into acting that way even without it, because she feels happier as a robot. For the Japanese mother and wife, speaking perfectly fluent Japanese, having a gentle motherly tone, cooking perfect Japanese foods, almost always politely smiling, thinking like a perfect Japanese mother and wife, etc, she gets it from a pair of devices the couple inserted into her breasts when they kidnapped her. No one ever tries to escape because they have no reason to. Once they are fully and truly indoctrinated into their role, the couple would insert a special chip into their brains before sending them off. The chip would track and monitor their behavior, even control them if they begin to step out of line, as well as shift their appearance and even organs to further suit their role. The chip also gives them a strong compulsion to return once a year for intense training to make sure they stay the way they were conditioned to be.
You awaken to find yourself strapped to a bolted-down chair, with no clue of who you are/were, as they'd already erased your memory completely. Once your eyes open, two clamps make sure that they stay open as you find yourself staring at a TV, as your brainwashing video begins. You already have your pleasure-inducing accessory/outfit on/in as well. It turns out to be....