Footprints in the Snow

You've been receiving several letters from the Witchcraft Correspondence School but one day, they stop coming.

The last letter contains a mysteryous ticket for a night train. You decide to take the train and start a journey into the unknown.
What starts as a weird occurence soon will become a surreal journey that will put you on the path to uncover the secrets of a world shrouded in mistery. What does await you at the next stop? What is the true nature of the ones you meet? How do you fit into this? Who are you?