A world where 15 foot tall, technologically advanced giantesses called amazons rule over 4 feet tall humans known as littles. Its an unfair power dynamic but the amazons don't care. They treat littles like babies, taking them off the street and putting them in escapable diapers and other sinister babifying devices and clothing. Everything is a trap in this world. And you are a new arrival from earth, waiting at the portal to cross over into their world.