The Disappearance of Nagato Yuki-Chan

Yuki and her fellow Literature Club members are planning a Christmas party. Yuki wants turkey at the party, which lands her in a series of weird competitions.

Christmas is here and it's party time. Yuki thinks back on how she was able to save the club. Most of her wishes have come true, she has one last thing to accomplish.

Yuki and Kyon help a girl who has fallen in the park. After getting her to a warm place, they are told she was trying to capture Santa. Yuki remembers she's met her before.

While Haruhi takes Kyon on some errands, Yuki makes a Valentine's gift for Kyon.

On Valentine's Day, Yuki sees Haruhi giving Kyon chocolates. Ryoko sees how upset Yuki was and wonders if she will give Kyon her gift.

Haruhi and Koizumi see Kyon working on math homework that they learned last year. She mentions this to him, and he feels she's not taking North High seriously. He gets Ryoko to uphold their honour with a math challenge.