When a suspicious new Neuroi is spotted in the clouds, Yoshika is assigned on night patrol with Sanya V. Litvyak and Eila Ilmatar Juutilainen to investigate. During one of their missions, the Neuroi appears again, targeting Sanya, but the three work together to destroy it. As Yoshika and Sanya share the same birthday, they hear Sanya's father play a song for her over the radio.