If you really think about it, Chicago P.D. celebrating its 100th episode with a major Chicago Fire crossover makes perfect sense. After all, P.D. got its start on Fire with Voight (Jason Beghe), Halstead (Jesse Lee Soffer) and Antonio (Jon Seda) all appearing in major storylines during Fire's inaugural season.

The two-night crossover, which kicks off Wednesday with P.D.'s "Profiles," will see the firefighters of Firehouse 51 and police officers of District 21 come together to stop a serial bomber from harming more civilians. With social media infamy at the center of the story, Seda said this case will hit close to home for our heroes.

"Bringing these unique individuals together to help solve this case is something that really affects both Fire and P.D. because of suspects that they're looking at who have crossed paths with some of the Chicago Fire people like my sister Gabriella Dawson (Monica Raymund) and Sylvie Brett (Kara Killmer)," Seda told TV Guide. "It's more of a real personal type of case."

Chicago Fire and Chicago P.D.'s Major Crossover Will Include a Brettonio Reunion

Things will get especially personal for Antonio as he deals with a teenage daughter whose life is well-documented online. While her reputation wasn't dragged through the mud on the internet like one of the suspects in Intelligence's case, Seda noted that her online safety will be a major concern for him.

"It affects him big time because his daughter, it's her generation moreso than his that's growing up with social media and that's how they express themselves. She gets caught up in some things that, from the surface, look to be something that Antonio needs to dig deep into his parenting skills to try to cope with it," added Seda.

Despite hitting some roadblocks as a strict parent, this harrowing experience will ultimately bring Antonio closer to his daughter, according to Seda. "For Antonio, it's kinda tough. Especially being a police officer and how much that line of work demands from you. In regards to being a strict parent, I don't think he wants to be that kind of guy but he's trying to balance that. At the end of this, he becomes a better parent in knowing that he and he daughter are gonna be even closer," he said.

The two-night crossover event begins with Chicago P.D. on Wednesday, March 7 at 10/9c on NBC followed by Chicago Fire on Thursday, March 8 at 10/9c. Plus, Chicago Med airs Tuesdays at 10/9c on NBC.

Jon Seda, <em>Chicago P.D.</em>Jon Seda, Chicago P.D.