Muzzle is a gripping Cop & K9 thriller of vengeance and betrayal, an LAPD K9 and his K-9 partner battle on the streets of LA when they get into a shootout with local drug dealers and his K9 is shot dead. Driven by grief, our hero go rogue and partners with a violent K-9 with titanium incisors plummets deep into a sinister underworld to uncover the truth about who may be responsible.