 Nyorai kupfuurira kweiyi ndima - Harry Brown munhu akwegura akarega basa uyo ari Royal Marine akashongedzwa, uye murwi weNorthern Ireland. Anogara munharaunda yeLondon inotongwa nemapoka evanhu vane masimba masimba uye anopedza nguva yake yakawanda achitamba chess neshamwari yake, Len Attwell, mubhawa romunzvimbomo rine muridzi Sid Rourke. Apo chipatara chinoridza runhare kumutaurira kuti mudzimai wake, Kath, ari kufa, Harry anonoka zvikuru kumuona nemhaka yokuti anotya kutora nzira pfupi nomumugwagwa wapasi unopfuura navanhu vanofamba netsoka, uko chikwata chinobata dare. Mudzimai wake akavigwa pedyo neguva romwanasikana wavo ane makore gumi nematatu, Rachel, uyo akafa muna 1973. 