When Hondo’s ne’er-do-well cousin, Andre, goes AWOL from his Marine base during basic training, Hondo, Deacon and Daniel Sr. take a road trip to get the kid in line. But when they learn that Andre witnessed an illegal arms deal involving stolen military weapons, Hondo realizes there’s a darker explanation for Andre’s disappearance. And Alfaro plots to work outside the law when he discovers that his mother’s long-ago abusive ex is back in her life, repeating the violent ways of the past.