In December, a fever attacks Hikari after Nipa takes her out sledding. To cheer up Hikari, who feels bad that her low magic ability led to her catching the fever, Nipa has the other Witches organize the Saturnus Festival, which was scheduled to be canceled due to food shortages. As the Witches work on preparing the festivities, Nipa tells Hikari about how the previous year's festival helped her fit in with the Brave Witches. The plans deteriorate rapidly as everyone ends up in laughing fits after eating some strange mushrooms, leaving Nipa as the sole Witch who can fight off an attacking Neuroi. With Nipa struggling against the Neuroi's camouflage ability, the 501st Joint Fighter Wing's Eila Ilmatar Juutilainen and Sanya Litvyak arrive to help her destroy it. Later, Eila and Sanya deliver some supplies for the festival, helping to make it a heart-warming experience for Hikari.