After a long battle, the Igarashi Family and their friends have finally achieved peace. However... a new threat that transcends Giff, the progenitor of the demons, has appeared.

The man, Junpei Shiranami was transplanted with Giff's cells into the heart by ... Junpei, whose parents were killed by the red Devil, becomes Kamen Rider Vail with revenge on his mind, continuing ...