The Koryu docks at a small island, which happens to be Nanae's home. Nanae is reunited with her childhood friend, Kurosawa Hiroharu, but lies about her job when he displays hostilities toward her ship. He finds out when a WORM attacks, he's saved by the Sky Girls.

Koryu holds a Christmas party celebration. A portion of Otoha's first encounter with WORMs is further revealed. A WORM in the shape of Otoha's long-lost brother makes a dramatic appearance.