In an age of steam and roaring machinery, the mysterious has never left the mortal world.
At seventeen minutes past midnight, Mo Ke, a lost-property clerk at Graybridge Central Station, boards a train that isn't on the timetable. Passengers without shadows, an accident report written three years in advance, a brass key pointing to an unknown place, and a station no railway has ever acknowledged: Q-Null. Every clue seems to prove that he has already arrived somewhere he has never been.
Starting at Sequence 9, "Apprentice," Mo Ke continues to advance under the watchful eyes of the Church, secret organizations, and the Tarot Club. He gradually discovers that his true enemy isn't in a hurry to kill him. Instead, it wants to register his identity and rewrite his choices, making him the "passenger" fate has already ordained him to be.
When the past can take shape in the future and fate can forge cause and effect, how can a person prove that they are still themselves?
He has only one answer: push open the door that belongs nowhere.
