The One Chicago franchise has once again solidified its dominance in the television landscape, with its most eagerly awaited crossover event in five years. Airing on January 29, this thrilling three-part special captivated

audiences and skyrocketed the ratings, showcasing the unshakeable power of the Chicago Fire, Chicago Med, and Chicago P.D. series as a combined force According to TVLine, the crossover event began

with Chicago Fire, which attracted 6.3 million viewers and earned a 0.5 demo rating, marking a season-high for the series. Chicago Med followed with an impressive 6.6 million viewers and

a matching 0.5 demo rating, tying its own season record. The night culminated with Chicago P.D. bringing in 6.4 million viewers and maintaining that solid 0.5 demo rating. The entire event was a massive success, dominating primetime television across all three shows.

In comparison, other network shows couldn’t hold a candle to One Chicago’s numbers. ABC’s Shifting Gears and Abbott Elementary garnered 4.3 million (0.4 demo) and 2.6 million viewers (0.3 demo), respectively. Over on The CW, All American struggled with a weak season premiere, drawing only 277,000 viewers with a 0.0 demo rating. It was clear—One Chicago owned the night.

Inside the 2025 One Chicago Crossover: A High-Stakes Battle for Survival

Titled In the Trenches, this gripping crossover event began with a devastating gas explosion at a Chicago high-rise building, immediately setting the scene for chaos. As the first responders from Chicago Fire and Chicago Med rushed in to rescue survivors and provide medical treatment, the Chicago P.D. unit sprang into action, working tirelessly to identify those behind the catastrophic blast.

The stakes escalated dramatically when two of the team members were trapped under debris, heightening the urgency of the mission. But the real shocker came when it was revealed that a betrayal was at the heart of the explosion.

Lauren Bates (Jennifer Regan), a former Chicago P.D. officer, was revealed to be one of the masterminds behind the attack. In a jaw-dropping twist, Bates ambushed Sergeant Trudy Platt (Amy Morton) during a pursuit of the suspects, shooting her in the back. As Platt lay critically wounded, she was rushed to Gaffney Medical Center, where she flatlined several times on the operating table, leaving viewers hanging on every second of her fight for survival. Thankfully, after a harrowing and emotional struggle, Platt pulled through—but not without setting the stage for significant fallout across the One Chicago universe.

Meanwhile, Kelly Severide (Taylor Kinney) uncovered troubling evidence that the explosion wasn’t a mere accident. After narrowly escaping an attack by masked gunmen, Severide alerted the authorities, sparking a high-speed chase that nearly claimed Platt’s life in the process. The pursuit, combined with a personal betrayal, elevated the tension to new heights and kept fans on the edge of their seats.

With its blend of heart-pounding action, suspense, and deeply emotional moments, the One Chicago crossover lived up to its hype, confirming why the franchise continues to reign supreme in network television. It’s no surprise that fans and viewers alike can’t get enough of the One Chicago universe—making it one of the most compelling TV events of the year.