There will be a slight schedule change when One Chicago airs on January 29. Due to the upcoming crossover set for that Wednesday night, the regular order of Chicago Med, followed by Chicago Fire and Chicago P.D. closing the night, will be changed to accommodate the story that brings together characters from all three shows. Chicago Fire kicks things off at 8 p.m., then Chicago Med at 9 p.m., and concludes with Chicago P.D. at 10 p.m. It is not a considerable shake-up with just Med and Fire trading places. This is not the first time this shift has happened, with some previous crossovers mandating one for the story.