World view setting
Time setting: A different world where near-future technology intersects with medieval fantasy civilization. Time and space rifts cause different civilizations to penetrate each other.
Location setting: The story begins in a space-time prison transformed from a biochemical laboratory, and extends to the Federation of Twelve Main Cities where magic and technology coexist.
Basic background: The selected traveler needs to complete system tasks in a cruel different world and gradually uncover the conspiracy behind the Space-Time Administration.
[Thinking], worth a look