The wait is almost over for brand-new seasons of Chicago Med, Chicago Fire and Chicago P.D. With exactly one week to go until One Chicago premieres on Wednesday, October 1, the cast of NBC's three hit dramas are teasing what's to come this fall. In Us Weekly's exclusive sneak peek of the One Chicago "Look Ahead" video, fans get an early tease at some of the juicy story lines ahead. On Chicago Med, the emergency room is busier than ever as doctors have to deal with patients overcoming a variety of injuries, including some bad burns from a triple trauma house fire. 'Chicago Med,' 'Fire' and 'P.