“The Snow Mountain Holiday!”
The Guardians go to a winter training camp and stay with Kukai's grandfather, who is the priest at a temple near a ski resort. The Guardians enter a snow-sculpting contest, each building a part of a castle. However, Amu becomes discouraged with her gate. When Amu asks Miki to do a Character Change, Miki refuses. On the way back to the temple, Amu asks Tadase about the person he said he already liked when he rejected her. Tadase explains that he was referring to his family's dog. Nevertheless, Tadase confesses that he has come to like Amu's alter ego, Amulet Heart. That night, Amu becomes depressed that Tadase likes Amulet Heart, but that Amulet Heart is not her. Ran reminds Amu that Amulet Heart is Amu's would-be self and that Amulet Heart exists within Amu. Amu then becomes determined to work towards becoming her would-be selves.
“A Sad Christmas Eve!”
Amu goes shopping with Nadeshiko and Yaya for a Christmas party. When Amu sees a music video by Utau, Yaya informs Amu that Utau is a new idol singer. Elsewhere, Utau is practicing her performance, but when she becomes disheartened, her manager, Yukari Sanjo, brings up Ikuto. Utau is then determined to work harder. As Amu hurriedly runs home, she comes to a park where different groups are performing music. Amu hears a sorrowful melody and when she follows it, she discovers that it is Ikuto playing his violin. After the Guardian's Christmas party the next day, Amu returns home. However, the Guardian Characters feel the presence of X Eggs. They return to the park and find that everyone's eggs have been extracted en-mass and have turn into X Eggs. In the middle of them stood Ikuto who disappears in a burst of wind along with the eggs.
“Big Disturbance! New Year Live!”
Amu and the Guardians go to a live New Year's concert where Utau will be performing. While waiting, the Guardians realize that the Easter Company is the sponsor of the concert. Amu also sees Ikuto and follows him into a back area where she inadvertently overhears a conversation between Nikaidou, Yukari, and another person discussing the events that took place on Christmas Eve. As the concert beings, everything is going well until Utau sprouts tiny batwings and four X Eggs appear. The concert ends when part of the scaffolding above the stage falls due to the shenanigans of the Guardian Characters. Amu transforms into Amulet Heart and purifies the X Eggs, but not before Ikuto Character Transforms into Black Lynx and shatters one of the eggs. Amu learns what happens when someone's Heart's Egg is destroyed.
“A Guardian Character at the Ski Slope!? Snoppe's Appearance!”
The fifth and sixth graders are being taught how to snowboard by a top snowboarder in Japan, 11-year-old Mifuyu Torii. Amu's Guardian Characters detect that Mifuyu is about to create a powerful Heart's Egg, which also doesn't go unnoticed by Nikaidou. That evening, Mifuyu is about to compete in the preliminaries for a snowboarding competition. However, she becomes scared. When Mifuyu wishes to become brave and break her habit of becoming frightened before competing, her Guardian Egg appears and Snoppe hatches from it. With Snoppe's help, Mifuyu is able to compete calmly in the preliminaries. Nikaidou sees Snoppe and realizes that Guardian Characters are born from powerful Heart's Eggs. Attempting to harness that power, he confronts Mifuyu and causes her to begin to doubt herself. These negative emotions cause Snoppe to turn into an X Egg and Nikaidou quietly makes off with it.
“The Battle at the Snowfield! Save Snoppe!”
The Guardians learn that Snoppe is missing and set out in search for her. However, there is not much time left before Mifuyu competes. Meanwhile, Nikaidou analyzes Mifuyu's X Egg in a remote cabin, but is interrupted by Suzuki, Amu's admirer. Later, Amu nearly runs into Suzuki and brings him back to the resort where he tells the Guardians about the egg he saw. The Guardians find the cabin, but Nikaidou is alerted to their presence. However, as he slips off, Amu catches a glimpse of him. When the guardians enter the cabin, Snoppe hatches from the egg as an X Character. Amu and Ran transform into Amulet Heart and purify Snoppe. Snoppe returns to Mifuyu and the two are finally able to compete and win the competition. As the group returns home, Amu begins to suspect that Nikaidou is the one creating the X Eggs.
