美国电影美人鱼Wefollowthehitsand(moreoftenthannot)themissesoftwohapless,dead-brokecontractkillerswhofrankly,aremoreofadangertothemselvesthantoanyoneelse.EachepisodeseesFran(SuePerkins)andJamie(MelGiedroyc)trytotrackdownandkilladifferenttarget.Buteveryhitturnsintoashamblesofmistakenidentities,mistimedentrancesandmisfiringweapons.Whetherit’slosingtheirtargetinthewoodsornotbeingsurewhichoneofapairofidenticaltwinsthey’resupposedtobekilling,thingsrarelygoaccordingtoplan.