Toya Turner

When a drunk driver knocks down a transformer, the entire neighborhood is left without power on a frigid Chicago night and members of Firehouse 51 step up to lend their much needed help. While many from the community ride out the night at the station, in the midst of such close quarters, romances speed up and tempers flare. Meanwhile, Casey (Jesse Spencer) continues to lie to both himself and Dawson (Monica Raymund) about his condition and the stakeholders in Molly's bicker about the bar's direction.

Dr. Rhodes (Colin Donnell) begins his fellowship in cardiothoracic surgery, but gets off on the wrong foot with his challenging new boss, Dr. Latham (guest star Ato Essandoh). Dr. Choi (Brian Tee) navigates life as the new chief resident and finds the road a bit rocky, while Dr. Charles (Oliver Platt) approaches Sarah (Rachel DiPillo) with an interesting opportunity that catches her off-guard. Elsewhere, April (Yaya DaCosta) works to come to terms with her recently discovered illness and Dr. Manning (Torrey DeVitto) deals with a complicated case involving a pregnant woman who was a victim in a high speed collision. Meanwhile, Dr. Halstead (Nick Gehlfuss) takes exception to the actions of fourth-year medical student Jeff Clarke (guest star Jeff Hephner), whose past history with Dr. Manning may be a factor. Sharon Goodwin (S. Epatha Merkerson) tries to pick up the pieces and move on with her life in the aftermath of Bert leaving. Marlyne Barrett also stars.

Mickey teaches Chip and his friend how to gamble, and they end up losing a large sum of money. In an attempt to win the money back, Mickey uses Sabrina’s new relationship with the Junior National Women’s Soccer team captain to place a bet on one of their games. Meanwhile, Jimmy becomes overly invested in the soccer team’s success.

In the series finale, everyone's story reaches a surprising yet inevitable conclusion.

Max endeavors to save a nurse who has become the subject of a dangerous malpractice probe. Reynolds goes the extra mile to help a group of patients who are being poisoned in their own building. Bloom makes a startling admission to her sister.