Three young men, each orphaned by crime, make up a police team specializing in violent crimes. Their first case: catch a murderer who has terrorized a young boy.
The brothers take it personally when Matt is beaten by a ruthless ex-cop---who's now a hit man.
To help a young girl Raffi is forced to go undercover. The girl's father is forced back into a life of crime by a thief planning a subway heist.
It's a family feud when the hats clash with a family of extortionists that uses strong-arm tactics; an additional obstacle: saving the family's tormented youngest member from a life of crime.
The guys must act quickly when a deranged explosives expert escapes from prison and targets Mike, the cop who put him behind bars for murder.
Bad brothers blow away Buddy's buddy, leaving a young boy fatherless, so the Hats scramble to confront the hit men before they leave town.
Buddy travels to Las Vegas as he tracks a mob boss he thinks murdered his natural father. But the killer is closer to home, as is someone who has a contract to kill Buddy.
The squad must sharpen its skills to track down a twisted heir to a razor fortune who stalks a young female witness to his latest killing. Meanwhile, Raffi is mistaken for the "Kissing Bandit."
Frustrated by a canine capable of detecting smuggled drugs, a drug lord puts a bounty on the dog's life. So the DEA sniffs out the Hat Squad to protect the dog. But the brothers can't help but sink their teeth into the larger case.
A death-row inmate tips the Hats to a group of killer cops, so the squad must compile evidence against the miscreants before they wipe the brothers out.
A mob boss hires a hit man to kill his son's girlfriend after she goes to the DA with devastating information, and the Hats are called on to protect the woman and track down the killer.