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 death.
When he hears that Serano is out on bail, Dan panics and asks Liam for help. Liam doesn't trust Dan but Dan makes him a tempting offer that would put Serano behind bars for good. There is just a small catch - Liam can't tell Walker what's going on. Meanwhile, Geri decides to have an open mic night at the Side Step and encourages August to hit the stage.
Stella and Colton plan a Walker/Davidson family dinner. Meanwhile, Liam gets an unlikely ally when trying to prove that the Davidson’s were up to no good on the day Cordell raced for the ranch and Cassie vows to learn the truth about the last case her previous partner was working on.
Walker has concerns over Micki going too deep undercover and wants to keep a close eye on her and the possible new informant. Captain James and the new District Attorney work together trying to close the case to bring Micki home. Stella and Colton Davidson team up to solve a mystery while under the watchful eye of Trey and come across an interesting obstacle on their way home.
Walker invites Gale Davidson to participate in the chili cookoff at the Side Step to try and make amends after years of their families feuding, however Abby isn't too pleased with the gesture. Micki and Trey work on reconciling their relationship when she comes home after her deep undercover operation.
Things are still tense between Walker and Liam after Liam called in a false warrant on Dan Miller. However, things take a turn for the worse when Captain James informs the brothers that Serano's lawyers are using Liam's mistake as a way to set the criminal free, putting the entire Walker family in danger.
Captain James and Liam follow up on a tip regarding Emily's murder. The duo head to Mexico for more answers but decide to keep their trip a secret from Walker. Meanwhile, Trey escorts Stella, August and the girls soccer team to an away game but when things take a dangerous turn Trey, Walker and Micki have to team up to save the kids. Micki learns some shocking news.
Walker realizes his life is at risk and confronts Captain James who confesses to him the real reason Micki went undercover. Meanwhile, the Davidsons return home which sets Abeline on edge as there is dark history between the two families. Trey almost blows Micki's cover.Watch Now:AmazoniTunes
Cordell and the Walker family carry on with a day at the Rangers fair, but it’s not all fun and games when Cassie runs into familiar faces from her past. Meanwhile, Abeline attempts to clear the air with Geri and Colton tries a new approach with Stella.
When confronted by the Davidsons, Liam shares an old land survey which could spell trouble for the Walker family, and Bonham reveals one truth from the past while covering up another. Meanwhile, Cordell has news of his own he would like to share with the family if he can get the chance.
When his past unexpectedly collides with his present life, Walker is forced to resume his undercover identity to keep his family safe. Micki gets caught up in Walker's old case while August threatens to blow his father's cover. Trey starts his new job.Watch Now:AmazoniTunes
Micki comes clean to Trey about her past and they question what it means for them in the future. After a heartbreaking talk, Micki realizes it might be time to start a new chapter. Meanwhile, Walker and Liam put their differences aside and agree to trust each other when Denise asks them to investigate a case. Bonham dresses up as Santa Claus for the annual holiday party.Watch Now:AmazoniTunes
A tornado touches down in Austin and it's all hands on deck to keep the kids and community safe. Walker, Micki and Trey rush to the school where Stella, August and Ruby are at a school dance. Bonham and Abeline stop at a store for supplies where old memories resurface and the two are forced to discuss their marriage. Meanwhile, Liam and Bret get trapped in an elevator and everything Liam has been carrying on his shoulders gets the best of him and he makes a rash decision.
Captain James leads Micki and the team into a drug bust with a dirty cop, Officer Campbell at the center. However, after Campbell is inexplicably set free, he targets the Captain's son, DJ, in retaliation. Walker gives Trey advice on his future.
Walker and Geri are both unsure of their feelings for each other after their kiss and things get very complicated when Hoyt comes home from prison. However, the welcome home party is interrupted when Micki and Walker get word that Clint West is on the run.
Walker tells his family about the surveillance cameras in their home and partners with Denise to lure out whoever is watching them. Liam doesn't trust Denise, or her husband Dan, which frustrates Walker who is trying to mend the rift between the families. Micki continues to deal with the ramifications of her time undercover.