Dr. Larsen, a respected physician, faces harsh doubt when a man named Mr. Quinn accuses him of being a fraud and reveals Larsen's secret decade-long chest pain and imminent death within three days. Skeptical but desperate, Larsen agrees to receive treatment from Quinn, who demands Larsen serve Ms. Gray unconditionally in return. After applying the Sacred Nine Needles, Quinn dramatically cures Larsen, reversing his illness and youth. Grateful and astounded, Larsen asks to become Quinn's disciple, but Quinn refuses. The episode ends as they prepare to leave to treat Quinn's ailing grandpa, with Larsen determined to prove himself.