“BadMonkey”tellsthestoryofAndrewYancy(VinceVaughn),whohasbeenbouncedfromtheMiamiPoliceDepartmentandisnowahealthinspectorintheKeys.Butafterstumblinguponacasethatbeginswithahumanarmfishedupbytourists,herealizesthatifhecanprovemurder,he’llbebackin.HejustneedstogetpastatroveofFloridianoddballsandonebadmonkey.