After an Army ranger goes missing shortly after returning home from deployment, Magnum (Jay Hernandez) discovers that the man had received some devastating news upon arriving Stateside. Given that insight, Magnum realizes he must find the ranger before he is consumed by survivor's guilt in the new episode "The Long Way Home." Elsewhere, while they're on a mini-break, Higgins and Ethan (Perdita Weeks, Jay Ali) solve the case of a missing wedding ring, and Katsumoto (Tim Kang) tries spending quality time with his teenage son (guest star Lance Lim).