假面骑士剑

一万年前,52张卡封印著不死的生命体,直到20世纪,这些封印被破解,使这些不死生命再次苏醒.为了阻止它们在人类的世界进行杀戮,并把他们再次封印於卡内,被称之为BOARD人类基盘史研究所的鸟丸开发变身腰带.而橘朔也和剑崎真一被委托成为假面骑士Garren和假面骑士Blade而展开他们的英雄之战.故事中的初期橘虽然有协助对抗不死生命体,但他亦对剑等人采取对抗态度,但到了故事的中段便恢复正常．故事中还有第三位由相川始变身的假面骑士，命名为卡利斯,他的正体是Undead－Joker，这亦正亦邪的角色令故事更增添丰富，最後出现的假面骑士是由睦月变身的假面骑士Leangle，一开始被梅花Ａ控制，後得剑和橘等人的帮助，最後亦恢复意志，成为正义的战士．Millions of years ago, species of animals fought on the Earth for dominance. These species were called the Undead, and humanity (somehow) won the great battle. In the present, someone carelessly released all the Undead, so it's up to 4 Kamen Riders to stop them. But by catching up to and sealing the Undead, things seem to get bleak. In a last ditch effort, the main character, Kazuma Kenzaki, must fight the greatest adversary - Joker Undead