One Chicago Crossover Event Promo (HD) Chicago Fire, Chicago PD, Chicago Med

Get ready for the three-part #OneChicago crossover event airing Wednesday January 29th on NBC. When a gas explosion rocks a high-rise, Chicago's first responders come out in force to rescue hundreds of civilians. It's the calamity beneath the surface, however, that sends our heroes on a race to save 40 people trapped deep underground, including two of their own. This represents the first #OneChicago crossover since 2019.