Saya and the others arrive in Vladivostok, and take the Trans-Siberian Railroad with Elizaveta, a Russian Red Shield agent. But the Chiroptera are lurking in the most unexpected places...

Kai finds out that Riku has turned into a chevalier. "What can I do?" Kai keeps asking himself, wandering around in the city of Paris. He comes across Irene in the observation deck of the Eiffel Tower. She's terribly weakened, but she's ready to disclose what she knows about Schiff's past...

Okamura and Mao's apartment in New York is blown up and they have to move to David's place. In the meantime, Joel is investigating the US military and Chevalier's scheme, and he obtains information relating to Diva...

With much anticipation around the world, global live satellite broadcast of Diva's concert in New York begins. To stop Amshel's plan to fill the world with chiroptera using the Synchronicity effect of Diva's singing, Saya and Hagi sneak into the backstage and get ready for the final battle. Meanwhile, Nathan talks to Amshel and reveals his astonishing identity!!