Jamie goes undercover and befriends a fifteen-year-old snitch after he witnesses a murder. But a rogue Narc is controlling the kid, and is ultimately to blame for his death as well as two dealers.

Monica Harper's sexual involvement with Commander McKinnon escalates. As their on-again, off-again relationship progresses, Bobby Cruz discovers his abusive nature and helps Monica trap McKinnon into backing off.

The return of corrupt SMPD detective PERRY MARCUS, who is again using a band of teenagers to set up high level drug dealers. Among the group of runaways is Jamie Strickland's estranged sister, JENNIE. Jamie confesses that it was she who killed their abusive father before he had a chance to continue his ways with Jennie. All this happens under the watchful eye of Internal Affairs investigator, SUSAN JESSUP, who's long had it in for Jamie Strickland and the Pacific Blue unit.

Jamie's sister Jennie returns to Santa Monica, but is kidnapped by young juveniles. The guy Jamie is dating is somehow involved, also the dirty narc Detective Perry Marcus.