Captains Strand and Vega along with the members of the 126 are called into action to a county fair when a "Derecho", a series of fast-moving severe thunderstorms, hit Austin, causing hurricanic and tornadic-force winds, heavy rains, flash floods and a wide path of destruction. Owen's newfound passion for motorcycling puts him on a potentially dangerous path. Tommy has the potential for a romance when she meets an attractive single father. And as T.K. and Carlos prepare for their wedding, a secret from Carlos' past may stand in their way to happiness.

9-1-1: Lone Star Season 4 Episodes...

• s04e01 - The New Hotness
• s04e02 - The New Hot Mess
• s04e03 - Cry Wolf
• s04e04 - Abandoned
• s04e05 - Human Resources
• s04e06 - This Is Not a Drill
• s04e07 - Tommy Dearest
• s04e08 - Control Freaks
• s04e09 - Road Kill
• s04e10 - Sellouts
• s04e11 - Double Trouble
• s04e12 - Swipe Left
• s04e13 - Open
• s04e14 - Tongues Out
• s04e15 - Donors
• s04e16 - A House Divided
• s04e17 - Best of Men
• s04e18 - In Sickness and in Health

9-1-1: Lone Star Show Summary

Nearly 20 years ago, Owen Strand was the lone survivor of his Manhattan firehouse on 9/11. In the wake of the attack, Owen had the unenviable task of rebuilding his station. After a similar tragedy happens to a firehouse in Austin, Owen, along with his troubled firefighter son, T.K., takes his progressive philosophies of life and firefighting down to Texas, where he helps them start anew. On the surface, Owen is all about big-city style and swagger, but underneath he struggles with a secret he hides from the world - one that could very well end his life.