Dawson arrives at Casey's place and finds Katya dead and Casey missing. She calls her brother Antonio for help.
Casey is being held at gun point as Voight, Antonio, and their team come to the rescue. Casey tells them they were looking for Katya's notebook.
Severide learns he's being stripped of his rank due to the high rate of turnover on squad. A new captain is put in charge.
Casey returns to work and insists he's okay and ready to work.
The new candidate arrives tied up with duct tape as a prank by his friends. Chief Boden is not amused and tells him to go home.
Chili and Brett treat a pregnant woman with a gunshot wound. They deliver the baby in the ambulance. The mom dies en route to the hospital. Chili takes it hard.
Severide learns he can earn back his rank provided he completes management training.
Antonio informs Casey that Nesbitt was a confidential informant for the FBI and therefore was set free.
Captain Patterson orders pizza for the squad. The other guys wait for Severide to go first before taking any.
Severide meets a woman named Jamie at his management class.
The truck arrives at the scene of a huge fire and find it blocked by people shouting to let it burn. They plow through the cars and get the trucks through.
Dawson and Otis enter the house and find an old man refusing to evacuate. The roof begins to collapse and they bring him out.
The new candidate, Jimmy, comes to apologize to Boden. Boden gives him another chance.
Severide tells Cruz he wants to leave 51. Cruz tells him to think about it.
Will Halstead takes Chili and Brett to see the newborn they delivered.
Casey tells Dawson he wants to get back together. Dawson tells him she's pregnant.