Cornwall, 1783. Ross Poldark returns from the battlefield to find his father dead.

Rumours spread of a scandalous relationship between Ross and Demelza.

News of Ross and Demelza's marriage spreads, damaging Wheal Leisure's prospects.

With Jim gravely ill in jail, Ross and Dwight launch a desperate mission to save him.

Ross and Demelza face financial ruin, and George plans revenge on Jud. Francis, meanwhile, tries to rebuild his life and extends an invitation to Ross and Demelza.

Ross tries to help Francis's family financially, but George calls in Ross's debt. Demelza toils loyally to protect all at Nampara, and Dwight and Caroline continue to meet in secret.

Ross and Dwight stand trial for their part in the smuggling. A new tin lode gives Ross renewed hope in Wheal Grace, but it is George who is there for Elizabeth when her mother falls ill and deals Ross a bitter blow.