After a failed drug bust, Sam and Kelly discover they're after the same dealer, forcing them to team up to take down a major Stockwood player.

Sam calls on Kelly's undercover skills when she gets a lead on a gun-dealing dollar store. But when Kelly's cover is blown, Sam's forced to get out of her comfort zone to expose the supplier.

With an informant's life on the line, Kelly enlists Sam's help in raiding a Stockwood stash house. But can they solve the case when a key piece of the puzzle goes missing?

With a promotion in her sights, Sam recruits Kelly for a high-stakes sting that will get them one step closer to catching the Bowen Brothers. But when Sam's power play takes an unexpected turn, it puts Kelly in unforeseen danger.

Kelly enlists Elliot's help to investigate an MDMA dealer in his school. Meanwhile, when Sam's investigation into a father's missing guns takes a turn, she's surprised by who gets caught in the crossfire...

When a cooler full of guns puts Sam and Kelly on the trail of 77 more black-market firearms, the pair find themselves in a life or "death-trap" situation.