Ross Poldark returns to England after fighting in the American Revolution. His family and friends thought he was dead. The woman he hoped to marry is now engaged to his cousin. His father is dead, and the property he has inherited has been allowed to deteriorate. It is the late 1700s in Cornwall, England. This is a family drama, but is also about the challenges and conflicts between the rich and the poor. It is a time when fishermen are not catching much fish, tin and copper mines are closing down because prices are too low, but the price of food and rents are high. Ross faces the challenge of making his land productive, caring for the tenants who rely on him, and trying to win back the woman he loved - or finding a reason to live without her.

Ross is arrested for inciting the looting on the beach and committed to Truro Assize court. Loyal Francis recognizes Warleggan's part in his cousin's downfall but his and Elizabeth's attempts to help are rebuffed. Meanwhile teen-aged orphan and wealthy heiress Caroline Penvenen arrives to stay with her influential uncle Ray, along with her vacuous boyfriend, Unwin Trevaunance, a parliamentary candidate at the local elections. Verity also returns to support Demelza and to reconcile with Francis, who accuses Warleggan of circulating pamphlets blackening Ross's name. On the eve of his trial Ross is visited by Warleggan with a proposal which Ross rejects. Demelza is still optimistic that Ross will walk free but Francis is only despairing and takes drastic action. Written by don @ minifie-1

On the eve of her husband's trial Demelza ignores Ray Penvenen's advice and approaches Judge Lister for mercy but her plan is scuppered by George Warleggan. Warleggan is convinced that Ross will be found guilty but Ross is an immensely popular defendant and despite the intervention of Demelza's father and Warleggan's paid prosecution witnesses his own excellent defence, aided by the testimony of the captain whose life he saved, Dwight and surprisingly Jud, leads to an acquittal. Dwight also attends Francis following his failed suicide bid after his belief that Elizabeth had an affair with Ross and gets closer to Caroline, who is not sorry when outsider Trevaunance's election as MP causes a riot. Warleggan however is still desperate to acquire Ross's mine by any means whilst Demelza and Ross consider having another baby. Written by don @ minifie-1

Ross chairs the meeting for his mine's share-holders, where expansion of Wheal Leisure is approved but Warleggan's spy Tankard is also present and Warleggan's heavies attack Jud for failing to discredit Ross at his trial after their payment to commit perjury. To remain solvent the Poldarks are forced to sell many of their possessions and livestock, causing Demelza to keep her pregnancy secret from her husband. However, following the attack on Jud, Ross realizes Warleggan has schemed to keep Francis and himself at odds and is reconciled with his cousin at a family party, after which Demelza reveals her pregnancy to a far from displeased Ross. Written by don @ minifie-1

An epidemic sweeps through the county and Dwight is grateful to Caroline for providing him with a cart-load of fresh oranges to combat it. Ross meanwhile is thwarted in his efforts to expand the mine, thanks to Warleggan and his proxy, Tankard. To provide finances he strikes a deal with a local smuggler to use his beach to land cargo on, much to Demelza's annoyance. Ross also goes into partnership with Francis, despite Warleggan's attempts to split them up, and they open up the mine gaining access to Wheal Grace. Demelza gives birth to a baby boy, Jeremy, which goes some way towards reconciling Francis with Verity. Written by don @ minifie-1

When a smuggler is caught magistrate Francis cleverly ensures a lenient sentence but Ross suspects one of his miners, Nick Vigus, as an informer. Francis is also loyal to his cousin when they meet Warleggan at a party, where Elizabeth admits that she still has affection for Ross and Caroline jilts Trevaunance before Dwight reveals his feelings for her. Francis discovers copper in the mine but his jubilation is cruelly curtailed whilst Ross once more finds himself at the mercy of Warleggan, who has obtained his promissory note and has a financial hold over him. Written by don @ minifie-1

A cheerless Christmas looms for the Poldarks with Francis drowned in the mine having only found fool's copper and Ross facing debtor's prison if he cannot pay Warleggan. Ross is also anxious to expose the traitor and agrees to a dangerous scheme to trap them whilst Demelza is troubled by his frequent visits to console Elizabeth - though Warleggan is quick to ingratiate himself with the widow. Ray Penvenen accuses Dwight of fortune hunting and tries to ban him from seeing Caroline but she is far too perceptive and realistic to give up the man she loves. She also bails out Ross, whose tenacity she admires, in his hour of need - whilst seeking to remain anonymous. Written by don @ minifie-1

Ross joins a smuggling trip in the Isles of Scilly in order to meet Mark Daniel but, in his absence, George moves in on Elizabeth. Caroline convinces Dwight they must elope for a new life in Bath, and Captain McNeil plans to ambush the smugglers on their return.

Ross stands trial for smuggling but the case is dismissed when Jud and others provide an alibi and there is more good news when a seam of tin is found in Wheal Grace. Dwight is less fortunate as Caroline returns his letters with a written rejection and he considers becoming a naval surgeon. Elizabeth also has a setback when her mother falls ill and Warleggan is quick to ingratiate himself with an offer of help and marriage, which she accepts out of pragmatism rather than love. Ross, already distraught when a mining accident kills two of his workers, reacts badly and violently to the news, which does not go unnoticed by Demelza. Written by don @ minifie-1

Aware of her husband's infidelity with Elizabeth Demelza does not hold back from expressing her disgust and defiantly attends a house party alone. Here she flirts with the amorous captain McNeil though loyalty to Ross causes her to draw the line at sex with him. Elizabeth's marriage to Warleggan finally goes ahead whilst Ross gets good news on the business front when repayment of a previous loan enables him to maintain the mine and a profitable find is made - one which will hopefully save his marriage. Written by don @ minifie-1

The mine is at last bringing Ross wealth but Demelza, still slow to forgive, goes to stay with new mother Verity. An angry Ross gives the snide Warleggan a beating after his suggestion that Ross is cheating Elizabeth's son out of his inheritance before deciding to reenlist to fight in the Napoleonic wars. Dwight also signs up as a naval surgeon but is reunited with Caroline before he sets sail. Warleggan builds fences around his property, cutting off the public right of way and Demelza is one of the casualties of his hired thugs. Irate locals march on his house, Trenwith, vowing to burn it to the ground, but Ross dissuades them to spare them prosecution before he is reconciled with Demelza. Written by don @ minifie-1