In the story a female character will find herself transformed into a cavewoman. This will result in changes physical and mental. Physically the female will become stronger, with more muscular arms and legs, as well as their shoulders becoming broader and their stomach toned. Their arms will become longer and they will eventually find it more natural to walk with a knuckle dragging position. Their feet will become MUCH bigger, as will their hands, to allow them to run and swing and climb easier. Their bodies will become hairier, with the hair on their head becoming shaggy and tangled and growing out. Their arms will develop hair, as will their legs, under their arm pits. Their public hair, if they had any before, will become thick and wild. Their breasts will grow much larger with large wide areolas and large nipples. Their pussies will change to become able to take any cock they can find. Mentally they will feel their minds beginning to regress. First it will be hard for them to focus. Then they will find it impossible to do things they once did. As it continues their brains will focus on basic needs: Eating, Sleeping, and Fucking. They will become more crude and uncultured. Their speech and thoughts will become more cavewoman-like, with them speaking in broken sentences and using slower, dumber words to describe things. They will also find the are much happier, no longer burdened with their fears and worries. Modern life will no longer concern them and they will be happy being simple and primal. They will be much more horny and open about it