Erik Hellman

A large explosion sends Chicago into chaos; the members of the firehouse are tested when one of their own goes missing in the blast.

Severide feels compelled to help a man he saved from a car accident; Casey and Boden struggle to deal with the orders from Jones' father; a call to duty affects the firehouse.

Kane grows increasingly infatuated with his new senior aide, Mona, allowing himself to get swept up in her passion for the subsidized housing project. Ben Zajac and his wife, Maggie, run the risk of alienating themselves from Kane when they take the reins of Zajac’s gubernatorial campaign.