Hezekiah and Alec, two friends from Jamaica, finds themselves thrust into the criminal underbelly of London's East End. Here they meet Mary Carr, Queen of an all-female criminal gang known as the Forty Elephants, and run afoul of Sugar Goodson, criminal kingpin and notorious boxer.
One year later, Hezekiah's a shadow of the man he once was whilst Sugar Goodson is estranged from his family and drinking himself to death. Just as Wapping is about to sigh its last breath, Mary Carr bursts back into town with her loyal second, Alice Diamond, to reassemble her gang and reclaim her crown. As always, Mary has a plan; one which will involve all those she holds dearest. And this time it's riskier than ever.