In order to destroy the White World's world crystal by injecting a virus into it, Carene must fly at an incredibly fast speed. The only one who can stop her now is Stella and her Exceed with the power of super-speed. With the help of Saya and the others, Stella chases after Carene.

In a final effort to save the worlds, Saya seeks to reconnect with Amane through a fault detected in the process used to imprison the alpha drivers.