London ganglord The Guvnor is in hiding, and Finn Maguire has begun a new life running a boxing gym with his old friend and coach Delroy. But when Finn's lawyer Nicky Hale vanishes overnight with all his money, Finn finds himself in hock to a loan shark with a vicious gang of enforcers. Desperate to track down Nicky and repay his debts, Finn investigates her other clients and soon finds himself engulfed in a web of lies, betrayal, malice, and madness.