Bad news: Going through something traumatic puts a strain on the relationship, EP Michael Brandt tells EW.

Theyre not the only couple facing new challenges.

Good thing theyre experts at putting out fires!

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Credit: Matt Dinerstein/NBC

Below, Brandt and Haas tease whats in store for season 5.

ENTERTAINMENT WEEKLY: Where will the new season pick up?

How is that going to affect Severide and Stellas relationship?

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And Miranda has been promoted to series regular, what are we going to see for Kidd this season?

What new challenges is Severide facing this year?

Jimmy is going after Boden can you tease how ugly that will get?

BRANDT:It gets about as ugly as possible.

Is it going to divide the house or just turn everyone against Jimmy?

BRANDT:There is no version of people turning their backs on Boden this season.

Certainly Jimmy is a thorn in the side of the house due to this passion.

People support Boden, but its not going to be easy.

Theres definitely going to be pressure on everybody to keep their loyalty.

Dawson has become a foster parent, what new challenges does that present?

So there are some unresolved issues with Susan, shell be back in the first episode.

Casey did show up in the finale, so is he all in?

HAAS:Yeah, he is.

Casey made a very conscious decision at the end of last season to go back to Dawson.

HAAS:No, not at this point.

How is Casey balancing his responsibilities this year?

HAAS:Well probably dial back the alderman part of it as the season progresses.

Where are we picking up with Otis?

What about for Hermann?

HAAS:Hermann will remain as one of the multiple beating hearts and souls of the firehouse.

How about for Cruz?

Any big multi-episode arcs this season?

It might involve firehouse fan fiction.

Any ripped from the headline stories?

Chicago Firereturns Tuesday at 10 p.m.