On July 4th, Robby meets his replacement for his upcoming sabbatical, and a familiar face returns to the Pitt.

Distracted by her impending deposition, King suffers a fall. Then, while Al-Hashimi attempts to revolutionize the department's technology, Javadi sizes up the competition.

After a fatal motorcycle collision, a husband and wife are rushed to the ER. As King and Javadi deal with a bickering family, Santos is forced to check her assumptions about a possible case of child abuse and Robby bonds with a Tree of Life survivor.

With a nearby hospital shuttered on the busiest day of the year, Robby and team must field extra patients, including the victim of a parkour mishap.

As patients continue to pour in, including a local prison inmate, Robby and Langdon must work together to save a beloved patient.

As the team deals with a loss, Al-Hashimi and Robby continue to clash over the best course of treatment for a patient showing signs of malnutrition.

While Dana tends to a sexual assault victim, Abbot helps an officer injured in the field, and Mohan attempts to keep her uninsured patient in the ER.

In the wake of an IT shutdown, Princess must manage a completely analog ER. Al-Hashimi, Mohan, and King assess a woman with sudden blindness.

After one of Javadi's patients slips through the cracks, Dana calls in an old friend with experience running a low-tech ER.

After an incident at a nearby water park, several critical patients are rushed to the Pitt. Later, Al-Hashimi confronts Robby.

While King struggles to cope with her sister's newfound independence, patients and staff are put on edge by an unexpected presence in the ER.

After she steps up to defend her trainee, Dana clashes with Robby about her methods - and his upcoming sabbatical.

As the night shift begins, Mohan's AMA patient is brought back to the ER, Langdon doubts his place in the Pitt, and Robby gets Duke's results.

After his bike takes a hit in the ambulance bay, Robby levels with Duke. A spinal cord injury forces Langdon to attempt a risky procedure.

Al-Hashimi reveals details from her medical history, forcing Robby to face an ethical dilemma as he prepares to leave for his sabbatical.