It was the age of Da Vinci and Michelangelo, of enlightened creativity and unparalleled intellectual achievement. But it was also the age of Machievelli, of rampant lawlessness, incessant war and unspeakable depravity. At the heart of the world order was the Vatican, the arbiter of conflicts between kingdoms and empires. And at the center of the Vatican was a man whose quest fo...。黑暗皇帝為了達成統治地球的目的,命令恐怖的蝙蝠怪人率領一眾怪獸出擊,在東京實行兇殘的“卡拉卡拉作戰”,要把全日本人的血和水吸乾…… 少年隊成員姊弟受到可怕襲擊,假面騎士X深入基地拯救無辜市民,與眾怪人展開連場激戰。最後,五位假面騎士:一號、二號、V3、騎士人與X共同聯手,誓要粉碎黑暗皇帝的血腥陰謀。。