After Heather has shown him the flat she hopes to buy with her drugs money Ra'Nell welcomes his mother home. Sully visits his daughter but Chris bars Dushane from his house as a liability. Sully suggests to Dushane that an informant in their group is in league with The London Fields. He names Gem and sends a thug,Dris,to kill the boy's dog and send him into hiding before Ra'Nell gets the courageous Leon to call the gang off. Though Kamale does not turn up to Shaun's funeral a chance sighting leads Dushane and his gang to their rival where,after claiming another victim,they locate the missing drugs at a tyre depot,where Lee Greene just happens to be so they shoot him too but now a full-scale gang war erupts as Kamale's associates seek revenge.

Dushane is shocked that Sully still has the gun which killed three people but he refuses to go along with Raikes' plan to sell him out as a liability. Overhearing Vincent,Heather's Vietnamese buyer,refusing to give her the price she wants for her weed,Ra'Nell persuades Dushane to pay the required rate and shows him a sample of its quality. Heather goes to hospital and gives birth,admitting to Lisa how she involved Ra'Nell in her scheme. Lisa rings Leon,who tries to prevent Sully from stealing the marijuana from Ra'Nell but in the fight that follows Sully shoots and kills Leon.Dushane visits Raikes on the pretext of giving Sully up but shoots him and makes it look like suicide. He gives Ra'Nell the money for the weed,which he passes on to Heather and,as Ra'Nell,Gem and Gem's girlfriend Chantelle go into business with Vincent,Dushane,having got Raikes out of the way,is now the kingpin of the estate's drug-peddling industry, the Top Boy.

Dushane and Sully are making money, but soon learn that Jamie and his crew have big plans too. Ats is showing signs of problems at home, and the recent fire is haunting Sully.

A familiar face breaks free from jail and confronts Jamie abut his self-appointed leadership; Lizzie must change her business strategy.

When an enemy's takedown puts Jamie back into a position of power, Dushane and Sully use their slick tactics to outsmart him.