Ventara
Ventara is he mirror world which exists behind every mirror or reflective surface. There were 12 Kamen Riders: Dragon Knight, Wing Knight, Incisor, Torque, Camo, Strike, Sting, Axe, Thrust, Siren, Spear and Wrath. The evil alien General Xaviax fought against these 12 Kamen Riders to destroy Ventara. Xaviax managed to defeat all the Kamen Riders and with the help of the orginal Dragon Knight stole all of the Advent Decks, except for one, Kamen Rider Wing Knight. Xaviax is now targeting earth, but Wing Knight is there to stop him. Xaviax distributes the Advent Decks to civilians and tricks them into fighting against Wing Knight. An Advent Deck is a deck of attack cards. Once a card is inserted into a visor the attack will take place. Each Rider makes a contract with a beast using the Contract Advent Card. These Contract Beasts aid their Rider in attacks. When a Kamen Rider is defeated they are vented (sent into the void between Ventara and Earth known as the Advent Void), and there is no way of escaping. The Advent Void was created by Eubulon, the crator of the Riders. The Advent Void is a failsafe, when a rider is badly hurt they are sent there and Eubulon can pull them back out. But when Eubulon disappeared, they were trapped in the Void. When the mirror world opens or something is happening in the mirror world, Riders are notified by a loud ringing that only they can hear
