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.

Aria has had a terrible day. She caught her boyfriend cheating on her earlier and just wants to get home to enjoy her delicious gelato. However, there is someone stalking her in the shadows. Someone with an insatiable taste for...death.

Two skeptic researchers investigate a mother's claim that an unknown presence may be trying to communicate with her 7-year-old daughter.