Police Woman Lisa Beaumont joins Sgt. Crowley's vice squad. Their target is an illegal gambling operation. The operation is run by Carl Vitale and Lisa goes undercover to get inside the ring to win Vitale's trust. The police soon learn they could bust something much bigger than just Vitale when they discover he runs several private casinos all over town.
Joe Benton is taken off the surveillance squad after being involved in too many stakeouts that ended violently, so Sgt. Barrett drafts him for his narcotics squad investigating the "Mexican Connection."