Walker and Micki investigate a bomb threat at the school that targeted Liam and Stan. Abeline and Bonham plan a vow renewal, and Trey’s mother comes for a visit.

Walker’s world is shattered after receiving shocking news that changes everything.

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.

During a would-be simple assignment, a misunderstanding causes Walker and Cassie to examine where they are in life and what lies ahead. Meanwhile, August strives to roll with the cool kids to disastrous results and Trey struggles with what being a Ranger means for his relationship with his mother.