In which the youthful Dr Martin Arrowsmith, newly arrived in the throbbing heart of South Zenith, swiftly encounters the gritty realities of medical practice—from battling factory blazes to lifesaving ambulance rides—while navigating hospital routines and the dubious amusements of interns. Amid the rush of emergencies and the solid camaraderie of colleagues, he wrestles with his restless ambition and the haunting memory of his revered but distant mentor, the austere Max Gottlieb.