剧情：
In“Muzzle:CityofWolves,”JakeRosser(Eckhart),hauntedbyPTSDfromhisdaysasaK-9officer,endeavorstoleadapeacefullifewithhisfamilyandretiredK-9companion,Socks.Butthetranquilityquicklydissolveswhenaruthlessgangtargetstheminabrutalattack.Determinedtoprotecthislovedones,JakeandhisnewK-9partnerArgosdelveintoaviolentunderbellyofcrimewhereJakeconfrontscorruptofficials,uncoversaperilousdrugtraffickingringandbattleshisowninnerdemons.