Mia Park

As the city is thrown into chaos by freezing temperatures, Sylvie gets trapped in a life or death situation. Plus, an abandoned baby is found at the Firehouse.

The Firehouse 51 crew have their work cut out for them when a tornado hits the city. Also, Brett must report Chilli after she makes a big mistake.

Dr Manning goes to extreme measures to help a fearful pregnant woman and Dr Choi and April try to strike a balance at work. Also, Dr Charles and Dr Reese continue to disagree about their patients.

When Erin and Jay are called to a shooting at a family home, it appears the father's dark dealings with a dodgy pyramid scheme may be responsible for his loved ones' deaths.

The shooting of Dr Charles moves to the courtroom. Dr Halsted and Dr Manning work on a heart-wrenching case.

When Goodwin receives financial complaints from the hospital board, she is forced to implement new guidelines that cause headaches for the doctors.