Three days after learning of her brother Finn's death, Honor receives his last letter from Iraq. Devastated, she interprets his note as a final request and spontaneously sets off to California to fulfill it. At the last minute, she's joined by Rusty, Finn's former best friend.

Rusty is the last person Honor wants to be with--he's cocky and obnoxious, just like Honor remembers, and she hasn't forgiven him for turning his back on Finn when he enlisted. But as they cover the dusty miles together in Finn's beloved 1967 Chevy Impala, long-held resentments begin to fade, and Honor and Rusty struggle to come to terms with the loss they share.

As their memories of Finn merge to create a new portrait, Honor's eyes are opened to a side of her brother she never knew--a side that shows her the true meaning of love and sacrifice.