Moretti reassigns Gates back to the ER and treats a couple involved in a car accident. Morris prepares to take his written board exams. Neela is assigned a young genius intern. Kovac plans to extend his stay in Croatia while Abby struggles with single parenthood.

Moretti brings in new attending Skye Wexler to help with the patient load. Morris and Pratt cram for the medical board exam. Gates treats a returning patient from the ICU whose condition has worsen. Sam tends to a teenage girl who is feeling neglected by the staff. Neela's intern, Harold, seeks her advice on a personal matter. Abby struggles with her relapse.

The city suffers power outages during an unseasonably hot spell. Nursing-home patients are brought into the ER suffering from hyperthermia. Abby and Pratt disagree on the diagnosis of a fussy baby. Abby falls back to old habits and quickly spirals down to rock bottom on a night she'll forever regret.

Gates and Julia nurture their newfound romance but are soon interrupted by a troubled phone call from Gates' ward, Sarah.

Morning shift begins. The night shift treated 142 patients - a new record. Dr. Morris is confident that by the end of the day the ER can set a new record of 300 patients. Frank reminds him that there has never been more than 250 patients in a day. Dr. Morris bets $300 that they can reach 300 by the end of the shift. Frank, Dr. Gates and Dr. Pratt each bet $100 against him. But will the game be fair? Also, when chaplain Dupree arrives announcing that she's doing a round of the hospital, holding blessing ceremonies and memorials, the guys are against it, except for Dr. Gates, which makes the others suspicious. Frank goes straight to the point. Then there is the accident involving a camel.

A firefighter is brought in after being injured at a fire that is blamed on a young girl with genetic problems. Abby decides to prove the girl did not cause the fire. A disfigured man saves his anti-social neighbor. An old woman dies unattended at the ER while the staff are waiting for a psychiatrist. Pratt backs up Abby in an administration meeting. Neela's cousin apparently chooses Harold.

Pratt gets cold feet when Bettina tries to take their relationship to the next level. Neela joins the Ortho's hockey team and is shocked to see who their opponents are in the first game.