Cruz's past comes back to haunt him. Severide prepares to teach an arson class at the academy. Mouch searches for a victim's next of kin.
A new chief shakes things up at Firehouse 51. Violet and Novak work to uncover the truth behind a car crash.
After Damon disobeys Kidd's orders on a call, he turns to Severide to protect him.
Violet risks her job to deliver a baby on a tragic call. Mouch, Capp and Tony help Cruz track down Javi's stolen bike.
Severide and Van Meter investigate a fire at a family-owned restaurant. Pascal questions Kidd's leadership.
