A successful and unnamed London cocaine dealer, planning to retire from the industry, has his life spiral into complication after he's handed two tough assignments from his boss, Jimmy Price. The first task is to track down the missing drug-addicted daughter of one of Jimmy's old associates. Meanwhile, the second, and seemingly straightforward task, involves the dealer negotiating the sale of a stolen batch of Ecstasy pills. The deal has the potential for huge profits, but also carries the risk of starting a war with the Serbian drug dealers who originally owned the drugs. As he navigates these dangerous waters, our protagonist aims to keep his identity secret, make his final sale, and escape the drug trade for good.

However, the protagonist's efforts to leave the criminal world behind are complicated by a series of betrayals, double-crosses, and murders. The deeper he dives into his final tasks, the more entangled he becomes in a web of deceit involving various factions of the London underworld, including gangsters, hitmen, and a notorious Duke. As he struggles to fulfill his obligations and cut ties with his illicit past, he realizes the layer cake of social strata and criminal activities he's part of is far more intricate and dangerous than he ever imagined. His journey through London's underworld exposes him to its most ruthless inhabitants and threatens his plan for a clean break, highlighting the unpredictability and peril lurking within his line of work.