When the crew responds to a call in a remote forest, they come under fire by an outlaw protecting illegal marijuana crops.

A former inmate firefighter harboring a grudge against Sharon returns to carry out his revenge.

The crews respond to the scene of a train crash where the rescue has the potential to spiral out of control when they discover the train is full of illicit cargo, and Robin, an enigmatic modern-day train hopper, helps injured patients.

The station 42 and Three Rock crews are called to a backfire started by a private firefighting company to protect a high-end winery but instead threatens to grow out of control.

The station 42 crew must protect Edgewater and take cover when an extremely rare and dangerous fire tornado leaves lives in peril.