Arika, Mashiro and Miyu end up in the Black Valley, where they encounter the long-missing Mai and Mikoto the Cat Goddess. Arika learns that she is the daughter of Lena Sayers, the Otome for the Kingdom of Windbloom, and that Nina is the true princses. Natsuki and Nao later join them. The title of this episode is a reference to Nausicaä of the Valley of the Wind.