Dana treats an HIV positive patient of Lu's when Lu is out of the clinic and learns that his mother took him off the HIV medication with Lu's permission. She is furious and reports the mother. Although the boy suffers terrible side effects from the medication, Dr. Bob Jackson insists that he be put back on it. Dana falls for her handsome intern.

Strange things are brewing at Rittenhouse. A patient seeks Lu's treatment for what appears to be a simple rash; but upon closer examination, the condition turns out to be a dangerous flesh-eating bacteria. Meanwhile, Andy is caught in the middle of a sensitive case when a mother wants to have her schizophrenic daughter's tubes tied. And Peter tries to piece together clues to close the book on a doc who's up to something sneaky.