Yggdrasill Corporation transformed Zawame City into a feudal-like city. To escape the city authority, many of the youth formed dance crews along with the rising of a game that uses the mysterious Lockseeds that can summon Inves monsters.

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.

In Zawame City, a large company known as the Yggdrasill Corporation transformed the once-bustling city into a feudal-like city. To escape the feeling of being under the city authority, dance crews were formed by young people to bring joy back to the public. Along with this is a popular game that uses the mysterious Lockseeds that can summon mysterious monsters called Inves that are said to come from another dimension.—Mwd