Maggie(SerindaSwan)isatoughandruthlessmemberoftheall-femaleDarkMoonmotorcyclegangledbythemercilessTrigga(PollyannaMcIntosh).AfterMaggie'scousinisattackedanddruggedataparty,thegangridesouttotakerevengeintotheirownhands.Theattackers,ledbyKeegan(JakeLockett),don'tseethefurycomingandawarbreaksoutwithMaggieandBrian(DiegoBoneta)caughtinthemiddleasbothsidesracetowardsaviolentshowdowntoenditonceandforall.
