One year after the death of Sean Wallace, the map of London has been redrawn and there is a new brutal ruling force in power.
Billy Wallace is lured back to London to seek revenge on Elliot; as more of Koba's associates are killed, he tightens the screws to stamp out rebellion.
Luan faces a desperate race against time that culminates in a violent showdown; Ed starts to question if he's backed the right horse; Billy makes a decision about his place in the gang world; Koba has an explosive encounter with a new foe.
Elliot is on the cusp of freeing himself and his father from the Investor stranglehold, but when Shannon Dumani comes to him an urgent problem, events threaten to derail him; Asif issues Koba with an ultimatum that could backfire.
With battle lines redrawn, Asif makes a ruthless business deal that brings him face to face with his nemesis Lale and a dark game of cat and mouse begins; Marian fights to secure the future of the Wallaces.
Elliot goes after those who have wronged him, but his plan dangerously unravels; Billy makes a shocking discovery.
Elliot's conflict reaches an exhilarating dénouement; Shannon makes a grasp for power; Marian stands to lose everything; Koba faces his biggest threat yet as parties battle for control of London.
Tensions continue to grow on the morning of Finn's funeral; creating as much chaos as he prevents, Elliot Finch goes deeper and deeper into London's murky underworld.
Elliot establishes a connection with a key member of the Dumani family; meanwhile, Sean unleashes his fury after making a discovery about his father's murder.
Lale is asked to make an impossible decision; Sean enacts a dangerous plan; Elliot takes on a new foe.
Elliot's loyalty is tested by an increasingly suspicious Ed Dumani; Sean throws a dinner in an attempt to unite the two families; Alexander is asked to meet with an old contact.
Hidden away in a farmhouse in the middle of nowhere, Darren wrestles with the chaos he's unleashed.
With the Wallaces retreating to a safehouse, Marian puts pressure on Sean to uncover Finn's killer; meanwhile, Elliot's recuperation is interrupted by a new danger.
With the truth about Finn's murder revealed, the Wallaces and the Dumanis will never be the same again; meanwhile, Luan is forced to confront the deadly consequences of his actions.
With the stakes higher than ever, the Wallaces are forced to go into hiding; Luan risks his life to rid himself of Mosi; Elliot attempts to save the life of a colleague.
Elliot is forced to make a choice that will define his entire future; Sean makes a discovery about a traitor who has been in his midst all along.