Under pressure from the medical director, Zanna is forced to hunt for a scapegoat. Ben insists on his own methods to treat a pregnant patient.

Zanna clashes with the staff after introducing new department rules. Ben's struggles become more evident.

Ben and Zanna finally begin to make peace. Emina, Dom, Olivia, and Olaf find themselves fighting through a busy night shift.

Ben's battle with addiction becomes more dangerous. Emina's family life intrudes at work. Zanna's flawed decision has dire consequences.

Zanna and Emina consider how to move forward. Ben grapples with post-traumatic stress disorder. Dom makes a life-changing mistake.

Zanna and Ben finally have to address his health—and their feelings. Olivia and Olaf strain as they work together. Dom deals with terrible guilt.

A huge fire puts doctors and nurses to the ultimate test. Zanna and Ben confront difficult decisions about their futures.