Lilia, who has just started the winter vacation, receives an invitation from Trays, asking, "Why don't you spend the New Year's Eve by the lake?" Lilia and her mother, Alison, head to the city where Trays awaits, but an avalanche on the way significantly delays their arrival. Lilia and Allison, who managed to get to Trays, are celebrating the new year at the lakeside villa that Trays rented. Attentive Allison goes out to the streets alone, and it's New Year's Eve with Lillia and Treize alone. Trays intended to take this opportunity to tell Lilia that she was a prince. However….