The NFL wants Dr. Omalu to retract the statements that he said about football killing Mike Webster.

Dr. Adams is confronted by the board, who tells him that practicing medicine without a license is unlawful. His response reminds everyone of the fundamental role of doctors: to open your door to those in pain, care for patients, and listen to patients.

Dr. Omalu explains how a football player died after a series of repeated hits to the head.

To illustrate why excessive use of antibiotics is a problem, a scientist performs an experiment. He drops bacteria into a solution containing a potent, broad-spectrum antibiotic, and they survive.

Derek is tasked with performing a risky surgical procedure in order to remove a spinal tumor from a patient. He and Meredith discuss the problem and potential solutions. During the discussion, Derek draws a diagram of the spine that illustrates the issue the patient is facing. Derek faces a dilemma: if he cuts the cord, he will kill the tumor, but the patient will lose function in both of his legs. Derek tries to find a way to cure the tumor without cutting the cord.