For Kris Dreemurr, Christmas isn't the same as it was when they were younger. December's disappearance, Asgore's falling out with the Mayor, and Asriel's college requirements have doomed them to a holiday spent at home with their mom. Their Christmas Eve takes a turn for the better, however, when a low rumbling shakes their snow-blanketed Hometown. Kris meets a pair of unexpected - and strangely familiar - characters: Spamton G. Spamton, the eccentric conductor of a magical train, and his elegant assistant, Swatch. Kris makes the decision to step onto the train and see where it takes them. Little do they know, it might be the most important choice they've made in their life. They'll connect with an old comrade, the new girl in town, and a very special friend they might need now more than ever. But once the train starts moving, there's no going back, and Kris will need the help of their friends, new and old, to stop Christmas from falling off the rails... A Polar Express AU that I came up with long out of season. This probably won't be theme-appropriate until after Deltarune Chapters 3, 4, and 5 have come out. I do not own Deltarune or the Polar Express franchise.