Robert McCall, who serves an unflinching justice for the exploited and oppressed, embarks on a relentless, globe-trotting quest for vengeance when a long-time girl friend is murdered.

Based on the experiences of Nebraska cop Kathryn Bolkovac (Rachel Weisz) who discovers a deadly sex trafficking ring while serving as a U.N. peacekeeper in post-war Bosnia. Risking her own…