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.

In 1990 Chicago, a taxi driver recounts to his passenger, a sportswriter, his life story. He reveals himself to be Nat "Sweetwater" Clifton, one of the first African Americans to play in the NBA.

The couples reunite for the destination wedding of Marcus and Angela's daughter, bringing drama old and new as they ask, "Why did we get married again?"

An assistant will do anything to get his presentation in front of his boss… even set himself on fire.