Saya and the others follow a container cargo carrying Diva who was transported out of the lycee. The operational unit of the Red Shield, Clara, Spencer, Rogers and McCoy, joins the pursuit. They go upstream on the Mekong River and head toward the experiment farm of Les Cinq Fleches Pharmaceutical. The farm had collected children from all over Vietnam. Mui, Riku and Kai were among them. But Saya and her friends are not aware of this fact as they get ready for the showdown...

Okamura and Mao arrive at the Zoo only to find a broken sword left behind. Saya and the others return to the Red Shield HQ with the wounded Riku. As Kai helplessly watches his still unconscious little brother, Saya wonders if what she did for Riku has really been the right choice...