NBC’s Chicago Franchise Planning First Triple Crossover Event in 5 Years [Video]

The One Chicago worlds are about to merge!

A crossover event is coming for Chicago P.D., Chicago Med and Chicago Fire, PEOPLE can confirm. The event marks the first time the trio of shows are having a crossover in over five years.

TVLine was the first to report the news of the episode, which is slated to air later on in the currently-airing seasons of the three shows. It will reportedly see a massive explosion in an office building that draws in the police department, the fire department and the hospital in Chicago.

The last time all three shows crossed over was in 2019, and saw the units come together when a deadly bacteria was spreading in Chicago. There have also been crossover episodes in 2016 and 2018.

Between the pandemic and last year’s SAG-AFTRA strike, there’s been a five-year gap since the last major crossover moment brought all three worlds together.