The protagonist possesses the power of all the Kamen Riders and returns to his own world, but a supernatural beast appears in his own world. This is in the Armor World. When the protagonist learns about the incident, he discovers that he is just one of the worlds. There are countless selves in the world, and he is just a part of the branch. Knowing this, he begins to move towards the world. There are many wonders in the world. The universe dimension is about to open, and the parallel time and space dimensions will reveal its secrets.
