Suddenly Ayato is surprised to see his mother and two of her Dolems attack. Ayato leaves Tokyo Jupiter, and one of the Dolems kills Ayato's mother, Mishima. Ayato, kills the Dolems and leaves Tokyo Jupiter. Meanwhile, Haruka joins an organization called Terra.

Itsuki finds a stone, while examining the Dolem that was defeated in the prior episode. Itsuki takes that stone and gives it as a gift to Sayoko, for Christmas. After, he goes to the beach and invites Ayato, Megu, and Haruka and the others to a Christmas Eve Party. And it begins to snow. While Megu and Kim are shopping Megu talks about Haruka, while Haruka gives Ayato gloves. And a Dolem appears to freeze everything. And RahXephon and Ayato must defeat it, but there's a problem, Sayoko is a part of it. And it's up to Ayato to save christmas for Nirai Kanai. When it looks in doubt, Ayato thinks of Haruka and the gloves he gave her, and saves the day.

B-Storyline: Quon stays in bed under her blanket, because she hates the snow.

Haruka visits the Great War Memorial Hall, where an unidentified source informs her documents showing Quon was in Sendai are probably fakes, and at dinner, we get hints that Ayato likes Haruka. A Dolem appears, but since it is too high up to effectively attack, and hasn't made any offensive moves, and TERRA lets it be. Sayoko spends most of this episode sneaking around, trying to get information out of people, with varying success.