Tracking the source of a new MDMA brings Sam and Kelly into the unlikely world of flower deliveries, as they narrow in on a new Stockwood player.

Sam and Kelly take their partnership to new heights when they go under cover as flight attendants to infiltrate a Central American gang's drug route.

Trouble follows Elliot and Jackie, wreaking havoc on Sam and Kelly's search for who shot a police officer.

Sam and Kelly’s friendship is put to the test when they’re forced to work with Kelly’s ex-boyfriend, whose intel gives them their biggest lead yet on the pink cocaine and 3D guns.

Scrambling to get back on the job, Sam and Kelly’s mission to find the real corrupt cop becomes personal when Sam’s career is put on the line and Kelly’s reputation is at stake.