The 126 are called into action to a county fair when a fast-moving group of severe thunderstorms hit Austin, Texas; Owen's newfound passion for motorcycling puts him on a potentially dangerous path; Tommy meets an attractive single father.

As Owen gets pulled deeper into the FBI's investigation of the motorcycle gang, Sgt. O'Brien makes a confession to him; Meanwhile, Grace and the 126 respond to a call from a man who claims his girlfriend slipped over the side of a cliff and Carlos searches for a missing friend, putting his own life in danger.