Max implements sweeping changes to hospital sustainability practices. Bloom returns from vacation. Reynolds treats a young patient with deadly heat stroke. Iggy discovers a dangerous situation with a former patient.

Sharpe offers help to a reluctant Mina. Max is faced with a tough decision about Luna. Bloom and Casey treat a patient who has been hiding a lifelong secret. Iggy finds himself in a very dangerous predicament. Reynolds treats a young heart transplant patient with astonishing symptoms.