One Chicago’s 2025 Crossover Episode Trailer Reveals Which Beloved Characters Are Trapped In Train Accident

The trailer for One Chicago’s 2025 crossover event reveals that multiple characters are trapped following a devastating train accident triggered by a gas explosion. One Chicago, which is composed of shows such as Chicago Fire, Chicago Med, and Chicago P.D., follows the work and lives of Chicago’s first responders, including firefighters, paramedics, and police officers. The event, airing January 29, marks the return of the franchise’s major crossovers after a five-year hiatus.

NBC’s One Chicago crossover trailer (via TV Promos) teases the urgency of the situation as Chief Dom Pascal (Dermot Mulroney) and Lt. Kidd (Miranda Rae Mayo) leads rescue efforts. With the building’s foundation at risk of collapsing, Pascal issues a warning for an immediate evacuation, while Kidd and Officer Adam Ruzek (Patrick John Flueger) find themselves trapped inside the train below the building’s foundation. Meanwhile, Lt. Severide (Taylor Kinney) expresses concern for his wife, Kidd, as the race to save everyone intensifies. Check out the trailer below:

What This Means For The One Chicago Universe

A New Crossover Event Could Change The World Of One Chicago

One Chicago’s crossover event is a new milestone for the franchise, marking the first such collaboration since their 2019-2020 crossover “Infection.” With key characters from Chicago Fire, Chicago P.D., and Chicago Med coming together for the three-part event, the crossover is expected to unite the shows in an intense rescue operation. Furthermore, the teaser indicates life-changing developments for the characters as they navigate the operation.

Additionally, One Chicago‘s production team emphasized the complexity of coordinating a large-scale crossover involving three separate shows. With extensive collaboration between writers, directors, and cast members, the event is designed to deliver an unforgettable viewing experience. Moreover, One Chicago has been a staple of NBC’s primetime lineup. This crossover event is expected to draw in retained viewers, while also attracting new audiences eager to see how the characters escape the train.

Our Take On The One Chicago Crossover Return

The Teasers Indicate An Action-Packed Viewing Experience

After a five-year gap, the return of the One Chicago crossover event is a welcome development. The images and trailer have already established what could be a heart-pounding three-part episode, packed with action and moving moments. The challenge of coordinating three shows into one cohesive event is no small feat, and it’s clear that NBC is pulling out all the stops for One Chicago. Audiences can expect a thrilling ride, but the real appeal will come from seeing these familiar characters face their biggest challenges yet in One Chicago‘s crossover event.