The team keeps trying to infiltrate the drug-smuggling ring in order to get to a terrorist. Meanwhile, Alex is offered a promotion in Miami and Ty keeps struggling with his divorce.
After a young black man is gunned down, evidence points to the possible corruption of a noted figure in the black community; Ty dates a woman with a connection to the shooting.
The team goes after a home invasion crew with Alex and Carter acting as the bait.
In order to get closer to their ultimate mark, the head of a notorious Mexican drug cartel, Carter has to pose as a porn king looking to expand his business into pharmaceuticals. But the case has Dean in an ever-complicated relationship with Maria, the attractive art gallery owner and daughter of a drug dealer.
Wandering in and out of he underbelly of Los Angeles, where criminals roam free under the veil of night or hide in the shadows of day, is routine for Lieutenant Carter Shaw and his special undercover task force. This team understands that to bring down a criminal, one must first get on their level.