AterrifyingnewevilhasemergedinBeaconHillscallingforthereturnofAlphaWerewolfScottMcCall(TylerPosey),toonceagainreunitetheBanshees,Werecoyotes,Hellhounds,Kitsunes,andothershapeshiftersofthenight.WithnewalliesandtrustedfriendslikeDerekHale(TylerHoechlin),LydiaMartin(HollandRoden),JacksonWhittemore(ColtonHaynes),MaliaTate(ShelleyHennig),andthereturnofalonglostlove,Scottandhispackjustmightstandachance.

本片讲述了一只日本雪猕猴遇到了一个陷入困境的职业杀手布莱斯(杰森·苏戴奇斯配音)的故事。而当布莱斯去世后，这只猴子(在布莱斯的灵魂的指引下)追随他的刺客脚步寻求复仇。