Sneak a Peek at the Season Premieres of 'OneChicago' Night (PHOTOS)

Jessica Napoli

Are you ready for #OneChicago night?

We definitely are ready for Chicago Med, Chicago P.D., and Chicago Fire to have their spotlight moment. The three procedural series are taking over Wednesday nights at NBC with back-to-back-to-back intense, life or death TV drama, and as we know from last season, no character is safe.

'Chicago P.D.' Casts Anne Heche in Recurring Role for Season 6

'Chicago P.D.' Casts Anne Heche in Recurring Role for Season 6

The news comes not long after her other NBC show 'The Brave' was canceled.

P.D. and Fire will be premiering without two key characters — Alvin Olinsky (Elias Koteas) and Gabby Dawson (Monica Raymund), respectively. Olinsky died from a stabbing wound he suffered in prison last season and Dawson accepted a job out of country (but how she will officially depart the show is still up in the air).

Also, as previously done every other season, the three Chicago shows will have an epic crossover episode on October 3, according to Entertainment Weekly. The first responderers answer a call about an enormous fire at a Chicago residential high-rise building and must race against the clock to save lives.

Click through the gallery above for a sneak peek at the premiere episodes of #OneChicago night.

Chicago Med, Season 4 Premiere, Wednesday, September 26, 8/7c, NBC

Chicago Fire, Season 7 Premiere, Wednesday, September 26, 9/7c, NBC

Chicago P.D., Season 6 Premiere, Wednesday, September 26, 10/7c, NBC