Walker continues to try to reconnect with his family but finds that his kids have developed new routines with Liam. Back at work, Captain James tells Walker he needs to get recertified to be a Ranger, but old memories of Emily hinder his progress. Micki investigates a suspicious fire.

Walker realizes his life is at risk and confronts Captain James who confesses to him the real reason Micki went undercover. The Davidsons' return home sets Abeline on edge as there is dark history between the two families.

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.

A feisty officer Perez mistakes Cordell for a suspect. Trey offers to help Liam with a project. Meanwhile, Colton is struggling with his feelings for Stella.

Gale coming clean to Geri about the past forces Cordell to relive a part of his he'd buried long ago, and Trey considers Captain James' latest offer.

It’s graduation day and the Walker family is turning a corner into a seemingly hopeful future that is until Cordell goes missing, and his mysterious captors are trying to break him down physically and mentally. Meanwhile, Captain James, Cassie and the rest of the Rangers have all hands on deck to bring Cordell home safely but Stella has ideas of her own on how she can help.

Walker attempts to make this the most memorable Thanksgiving ever in the hopes of luring Stella to return home, but when the family's annual "Circle of Thanks" turns into a circle of grievance, tensions bubble over- leaving things worse off than they began, with one member of the Walker family being rushed to the hospital.

After a shocking revelation, Cordell and Cassie set off to find out more about Grey Flag’s nefarious plans. Liam's and Stella's plan for the horse rescue appear to finally be coming together when a big-time philanthropist offers her support, and the Walker family joins forces to move the project along quickly. Trey's new assignment lands him in unfamiliar territory and a new partner could compromise his focus.

It’s a big day for the Texas Rangers and the Walker clan as friends and family gather to celebrate a very special event.

It's Walker's birthday and Geri is pulling out all the stops, but her plans are thwarted.

Walker, Cassie and Trey are charged with keeping an 80-year-old grandmother and witness safe.