Sora and Dark were practically joined at the hip. The twins did anything and everything together. But when Dark is captured and changed, Sora and his six other friends, Hiccup, Jack, Rin, Len, Kaiya, and Kane, must try to find him and fix the mess that the cursed ones have made. But as Sora spends more time away from his brother, Sora finds another he must look for.

One night, while giving a small neighborhood another snow day overnight, Jack Frost finds a mysterious person appear out of nowhere. He meets a girl named Xion, where they have the best time in the snow, as well as leaving a promise before parting ways.