在这部假面骑士铠武动作片中,铠武活跃的舞台是在一个新兴都市。以巨大企业为核心，经济十分繁荣，然而却有种闭塞的感觉，于是年轻人通过跳街舞驱散沉闷的气氛。在这些年轻人中间，暗地里流行着一种通过lock seed召唤小动物Invase，并让它们互相战斗的游戏。这些小动物Invase在游戏进行中会从打开的“异世界之门”现身，然而通往“异世界”的门却开始在世界各地开启，招来了威胁人类的危机。
从异世界出现的怪物究竟是？它们的目的是？
假面骑士铠武将如何拯救全人类的危机？他的对手骑士的命运会是？在混沌的现代社会，为贯彻信念而战，简直就是假面骑士的战国时代！用鲜艳的水果lock seed变身，厚重感满溢的骑士战斗要开始了!
Zawame-city is a company town where the Yggdrasil Corporation. In the city, young street-dancers divide up into a few groups. They enjoy dance battle and a sport that fighting between small animals summoned from a different world, but monsters also come after a while. A former street-dancer, Kouta Kazuraba gets a gadget that can him to make a Kamen Rider, wants to protect people against monsters.
假面骑士系列阴影作。呵呵。。小朋友看不懂，大朋友很无聊。神与人之路。
