Ross Poldark returns from war to right wrongs and reunite with the love of his life.

British officer Ross Poldark returns to his native Cornwall after the Revolutionary War after escaping as a prisoner of war. He finds that because he was believed dead, his home has fallen into ruin and his estate has shifted to his mercenary uncle following the death of his father. His uncle has committed to selling the family copper and tin mines to a ruthless local land baron while his former fiancee has agreed to marry his cousin in his absence.

Cornwall 1810. The Poldark family awaits the return of Ross from his mission to Wellington's army in Portugal. But their ordered existence ends with Jeremy Poldark's dramatic rescue of the stranger from the sea. Stephen Carrington's arrival in the Poldark household changes all their lives. For Clowance and Jeremy in particular, the children of Ross and Demelza, Stephen's advent is the key to a new world - one of both love and danger.