在这部假面骑士X动作/冒险/剧情片中,神秘组织·GOD看中了神敬太郎博士的人类工学技术，逼迫其加入，教授拒绝而遭袭击，儿子神敬介也被杀害，身受重伤的父亲为了让儿子复活，不顾自己的伤势，亲自执刀为儿子进行改造手术。敬介醒来后，父亲已死，透过计算机留言，敬介了解GOD欲危害世界的阴谋，于是背负起对抗邪恶的责任，成为第五号的假面骑士·假面骑士X。
From the dark corners of the world comes another fanitical terrisom group, this time it's the Government of Darkness, aka G.O.D. Daisuke Jin is transformed into the next generation cyborg, the Kai-Zorg with the help of his father. He was given the name Kamen Rider X. King Dark, leader of G.O.D, didn't count on Kamen Rider X coming to ruin his plans of pillaging, rape, and destruction of Earth. Armed with riddle stick, and ridel whip, Kamen Rider X kicked everyone's butt, who stood in his way. Every G.O.D. cyborg from Neptune to Chronos, fell before the might of X. But his toughest opponent was Apollogeist. Their battle lasted 13 episodes. Seeing how useless and unworthy his Cyborgs were against Kamen Rider X, King Dark began to create new soldiers,combining animals, like Starfish-Hitler, and Spider-Napolean. In the last episode, X finds out that King Dark was created by Dr. Jinau, a friend of his father's, but now his brain resides within King dark.
始于创新，收于传统。
