[spoiler]A Kamen Rider basically, is a normal person who ends up gaining powers beyond his/her imagination. Kamen Rider Wikia should provide a better explanation for it, but I can at least give you a few examples... Kamen Rider Kiva focused on a vampire prince/king who has to fight his own kind to protect humanity, as well as become king. Kamen Rider Decade (which is the powers that Keira has, allowing her to become the 17 Heisei Kamen Riders (Riders from 2000-2009; 2011- 2016) followed a mind-wiped Destroyer of Worlds, as he travels through the worlds of the previous Riders before him to regain his memory, and find his true world. Kamen Rider Fourze followed an astronomy club in a Japenese high school who ends up creating the Rider belt using special 'switches' from chunks of space rock.(At least to my knowledge...) [url]http://kamenrider.wikia.com/wiki/Kamen_Rider_Wiki[/url] (Here's the Kamen Rider Wikia site, if you're interested.) [/spoiler]