Welcome to a world with an infinite number of parallel worlds. One day, such a myriad of complex and intricate worlds starts to fall into the clutches of an evil dynasty known as Tojitendo. The only world that remains is the one where our protagonist, Kaito Goshikida, lives. For some strange reason, the world where Kaito lives and the Kikai World where the Tojitendo are from have been merged together. However, it isn't long before the inhabitants of Kikaitopia, the Kikainoids, and the humans who live there, start to get along in harmony. It isn't long before the nefarious hands of Tojitendo reaches them. Their peaceful days are soon about to come to an end, just when one of these humans seeks to fight to defend the lives of both humans and Kikainoids alike. Kaito's first ally just so happens to be the cool-looking red old man that is Kikainoid Juran. (Source: RangerWiki)