A serial killer known as Red Smile is slaughtering his way through California, taunting the police with his riddles. Brian Warner and his partner Marcus James Reed are the two cops trying to take Red Smile down.
Brian Warner is a martial artist and the definition of no-nonsense cop. He is also a masked vigilante known as Black Shadow who hunts killers and does what the police can't: He works beyond the law to protect it. A serial killer is loose and while investigating, Black Shadow figured out that it is a cannibal case. He met the boyfriend of the latest victim, a hacker who mistrusts the police but may hold the key to solve this case. And so Black Shadow and Marcus Reed bring him in for questioning.