A charismatic sheriff's deputy sets his sights on Danny. A young patient's demanding parents make things hard for Harper. Sophie faces a moral dilemma.

Danny and Sam undergo Dr. Cruz's scrutiny as she prepares to choose next year's chief resident. Camila looks for clues to a girl's mysterious illness.

A nightclub fire floods the ER with patients. With Danny's career hanging in the balance, Dr. Cruz must make a difficult decision.