Hezekiah is a shadow of the man he was and Sugar Goodson is drinking himself to death. Mary Carr has a plan to reassemble the Forty Elephants and reclaim her crown.

Hezekiah realizes London isn't done with him when Victoria Davies offers him an unusual proposal. The male elephants discover who shot their leader just as Mary makes her next move.

Hezekiah reluctantly begins to train Albert, whilst American mentalist Sophia Lyons arrives in Wapping and Mary's heist plans are revealed. Elsewhere, Murtagh begins to put pressure on Sugar.

Hezekiah has to decide whether he'll step in when Thomas risks his safety to save his family's legacy. Sugar also has a difficult decision to make. Mary's safety is under threat from all sides whilst she tries to keep focused on her plan.

Sophie and Alice take over heist preparations. Sugar confronts Treacle about his plans for the Blue Coat Boy and promises he'll make things right. Hezekiah is approached by a Black American boxer. Mary's life hangs in the balance.

Murtagh's grip on Treacle tightens as Hezekiah steps back into the ring. On the night of the Graften Ball, everything is set for the heist but things don't go to plan.