As the subjects of a medical study, the players have checked into a lab, but while they're on time at the site, no one else seems to be there — then they realize that something seems wrong here.
Steam has started emerging from one of the test tubes, and they've all gotten dizzy to the point of passing out.
When they awaken, they discover that the door is locked and no other way out seems possible.
Only a notebook and an enigmatic spinning code dial seem to offer any clues for how to escape the lab...