This drama series follows members of Austin's 126 Fire Department led by Capt. Owen Strand who, along with his adult son, T.K., move to Texas to help rebuild the firehouse which had experienced a tragedy of its own. His team of diverse and qualified first responders include widowed Paramedic Capt. Tommy Vega, Judd Ryder, who was the sole survivor of Austin's original 126 house after a rescue call ended in tragedy; Marjan Marwani, an adrenaline junkie and badass firefighter who also is a devout Muslim; Paul Strickland, a transgender male firefighter, who has a gift for observation worthy of Sherlock Holmes; and rookie firefighter Mateo Chavez.