Kamen Rider Ryuki

There's been an outbreak of incidents of monsters from the Mirror World targeting and attacking humans. Chasing after these cases is journalist-in-training Shinji Kido, who picks up a strange card deck that grants him the power of becoming a "Masked Rider," enabling him to fight these monsters, and dragging him into a furious battle...

Somehow Shinji manages to break out of the Mirror World, but since that day he's been followed by the figure of a dragon. Yui Kanzaki hands Shinji the card "Seal" and says if he seals the dragon-shaped monster with it, he'll be able to continue living as he has been without becoming embroiled in things he can't understand.

Shinji has become Masked Rider Ryuki. Appearing before him is Shiro Kanzaki, Yui's missing older brother. Shiro was the man who created the card decks and the Masked Riders. He leaves Shinji with the puzzling words, "Defeat the Riders." To Yui, who doubts those are the real intentions of her brother, Shinji will...

Darkwing attacks a young girl. Is Ren's intention to strengthen his monster going so far that now he's making Darkwing attack humans? Not caring about Shinji's suspicions, Ren's questionable behavior doesn't stop. However, Yui won't listen to Shinji's words. Then, Shinji challenges Ren to a showdown.

The third Rider makes an appearance: Masked Rider Scissors. Ren suspects Kaga, the missing manager of the antique shop, is Scissor's true identity and pursues him to those whereabouts. Knight challenges Scissors to battle. Shinji opposes Ren who can only think about fighting and wants a dialogue with Scissors but...

The trail Ren has been following to find Scissors is cut off, and Scissors' shadow creeps towards Yui. At the same time, Shiro Kanzaki's harsh rule demands Masked Riders must battle each other. Shinji has never once seriously paid attention to that rule, however...