Natsumi senses something strange when at an alley, but is unaware that she had been watched by a Kamen Rider (Ryuki) through a broken mirror. On her way, she gives a brief introduction on Tsukasa an enigmatic man who came to their studio one day, without letting his origin nor his ideas be known to people. Leaving her grandfather to fend for himself, she storms off in search of Tsukasa. Trying to intervene before thing went out of hand, Natsumi learns from the customers that all of their failed photos were taken by a man named Kadoya Tsukasa ( й–Ђзџў еЈ«). Natsumi is shaken back into the real world by one of the many ballistic customers of her grandfather, Hikari Eijirou ( е…‰ ж „ж¬ЎйѓЋ), who runs the Hikari Studio (е…‰ е†™зњџй¤Ё). It seems it wasnвЂ™t the only time she has had the dream she wonders aloud about the repeated dream while wiping tears off her face. Hikari Natsumi ( е…‰ е¤Џжµ·) awakes, with visions from her dream still resonating with reality. Straining her eyes, she could only see a belt on the entityвЂ™s waist, and as she read the only word on it, вЂDECADEвЂ™вЂ¦ With a final explosion, the girlвЂ™s attention shifted to a rustle among the bodies of Riders and beasts.ДЄ human-like entity hovered above the strewn bodies, emitting an aura which blinded the girl to its features. All the girl could do was watch in horror as the Riders were felled one by one, and in no time, the war ended as quick as it had started. It was difficult at first, but it became clear that the Kamen Riders were all fighting against a common enemy, though it remained well hidden from sight. Warriors emerged from all directions, on land and in the air. Without warning, an explosion from behind brought her down to her knees, and the world around her was thrown into chaos. A single dishevelled girl wandering across a barren, seemingly forsaken land, with no idea of her location.

Kamen rider 01 episode 1