The One Chicago universe delivered its most anticipated crossover in five years on January 29—and fans showed up in droves! The thrilling three-part event not only brought together the heroes of Chicago Fire, Chicago Med, and Chicago P.D., but it also dominated the night’s television ratings, cementing the franchise’s place as a powerhouse in network TV.
According to TVLine, the crossover’s opening hour on Chicago Fire pulled in 6.3 million viewers with a 0.5 demo rating, marking a season high for the show. Chicago Med followed with 6.6 million viewers and a 0.5 demo rating, tying its own season record. Finally, Chicago P.D. wrapped up the action-packed night with 6.4 million viewers and yet another 0.5 demo rating, making the event a resounding success across all three series.
Other network shows paled in comparison: ABC’s Shifting Gears and Abbott Elementary brought in 4.3 million (0.4 demo) and 2.6 million viewers (0.3 demo), respectively. Meanwhile, The CW’s All American suffered a weak season premiere, garnering just 277,000 viewers with a 0.0 demo rating.
Clearly, One Chicago was the star of the night—and for good reason.
Inside the 2025 One Chicago Crossover: A High-Stakes Battle for Survival
Titled In the Trenches, the three-hour event kicked off with a devastating gas explosion at a high-rise building, sending Chicago’s first responders into action. While Chicago Fire and Chicago Med teams worked frantically to rescue survivors and treat the wounded, the Chicago P.D. unit raced against the clock to track down those responsible.
The stakes skyrocketed when two of their own were trapped beneath the rubble—and a shocking betrayal changed everything.
One of the masterminds behind the attack was none other than Lauren Bates (Jennifer Regan), a former Chicago P.D. officer. In a jaw-dropping moment, Bates ambushed Sergeant Trudy Platt (Amy Morton), shooting her in the back as she and Adam Ruzek (Patrick John Flueger) pursued suspects.
Platt was rushed to Gaffney Medical Center, where she flatlined multiple times on the operating table, leaving fans on edge. Fortunately, after a tense and emotional battle, she pulled through—setting the stage for major repercussions across the One Chicago universe.
Meanwhile, Kelly Severide (Taylor Kinney) uncovered evidence that the explosion was no accident. After barely escaping two masked gunmen, he managed to tip off the police, leading to the high-octane chase that nearly cost Platt her life.
With action, suspense, and a deeply personal betrayal, the crossover event lived up to its hype—proving once again why One Chicago remains a ratings juggernaut.
