After a morning dealing with Grace's escalating anxiety, Jackie helps a struggling family speed along a test to diagnose a little boy's cystic fibrosis. But cutting through the red tape leads to sending the patient home with the wrong information. Dr. Cooper lays into her for giving a family false hope. Mourning her mother's death, Dr. O’Hara shows up at work after a night of clubbing and taking Ecstacy. Jackie covers for her at work while she comes down. Meanwhile, Eddie shows up at the bar, unbeknownst to Jackie, and continues his friendship with Kevin.