When Maybelline, an 80-year-old grandmother and witness, is in crucial need of protective custody, Walker, Cassie and Trey are charged with keeping the acerbic matriarch safe, and though Walker and crew call the plays, the wise elder is the one keeping score. Cassie grapples with a big decision and asks Geri for help to make some changes. Meanwhile, Stella wants to move on but continues to struggle with her grief and Liam tries to help. Lastly, August wants to join an after-school program and asks Bonham to help convince Walker to sign off on the program.
Texas Ranger Cordell Walker, a widower and father of two with his own moral code, returns home to Austin, TX, after being undercover for two years, only to discover there's harder work to be done at home. As Walker attempts to reconnect with his creative and thoughtful son August and his headstrong, somewhat rebellious teenaged daughter Stella, he finds that he needs to navigate clashes with his family - Liam, Walker's ADA brother who stepped in during Walker's absence, his perceptive mother Abeline and his traditional rancher father Bonham.
Walker's former colleague, Larry James, is now his Ranger Captain. And Walker finds unexpected common ground with his new partner Micki Ramirez, one of the first women in Texas Rangers' history while growing increasingly suspicious about the circumstances surrounding his wife's passing.