Long Synopsis|The Poldarks look forward to life together in peace, but a plea from Ross’ old Army Colonel, Ned Despard , compels him to the capital to help. As Demelza manages their affairs in Cornwall she encounters disenchantment and a new opponent, Tess . George meanwhile struggles to engage with the world after Elizabeth’s death and it falls to Cary to expand the family empire as Valentine struggles to find his place within it.

As George expands his power through a shady alliance the Poldarks become caught in a deadly web.

First love blossoms but disaster in Cornwall threatens the Poldarks' hopes of lying low.

Ralph seeks to ruin Ned as rebellion stirs and the Poldarks are caught in the middle.

George's cabal move to ruin the Poldarks and Morwenna wrestles a heavy decision.

Ross fights for Ned's life as Demelza uncovers betrayal and the young lovers take flight for a future together.

Ross discovers a French plot and George finds himself at the mercy of Joseph and Ralph.

With the fate of his nation in the balance, Ross' must gamble everything to protect his country and those he loves.