As the CEO of Hiden Intelligence corporation, which manufactures Humagears (helpful A.I. companions), Aruto Hiden must take up the mantle of Kamen Rider Zero-One to tackle a wicked cyber-terrorist plot that turns the benevolent Humagears into dangerous monsters! Now the villainous Ragnarök, who steals Progrisekeys to increase his power, has come forth to destroy all Kamen Riders, starting with Zero-One…