In an effort to prove she's the best candidate for a promotion, Sam recruits Kelly to pose as a high-rolling drug dealer. But when a big Stockwood player shows up unexpectedly, putting Kelly's life at risk, not even Sam's meticulous planning and Kelly's savvy UC skills can keep the odds in their favour. Meanwhile, Tiggy's new partner asks her for a favour that leaves her wondering just how far she'll go to see her plans through.