An edge-of-your-seat view into the lives of everyday heroes committed to one of America's noblest professions. For the firefighters, rescue squad and paramedics of Chicago Firehouse 51, no occupation is more stressful or dangerous, yet so rewarding and exhilarating. These courageous men and women are among the elite who forge headfirst into danger when everyone else is running the other way and whose actions make the difference between life and death.

After being rejected from every medical residency program on his list, Dr. David Tracy scrambles to perform 1750 hours of clinical therapy out of his garage to become a licensed therapist before his $500,000 activate and destroy his life.