It's 1485 England. Henry VII returns home after defeating Richard III at the Battle of Bosworth. It's the last battle in the War of the Roses. Henry and his mother Margaret Beaufort are constantly fighting off nascent rebellion from the remaining House of York. He is forced to marry York princess Lizzie to combine the two houses. Lizzie's mother, the Dowager Queen Elizabeth Woodville, is confined but continues to ferment rebellion with the help of Lizzie's aunt Margaret, Duchess of Burgundy. Lizzie's cousin Maggie is desperate to free her mentally-handicapped brother Teddy who has a righteous claim to the throne. Prince Richard comes back from the grave to lay claim to the throne.
This is a movie of evil triumph over good. It's the slow descend of Lizzie into hell. That can be unappealing to watch. It isn't for everyone. The acting is impeccable. The issue of historical accuracy is fair but ultimately besides the point. This is fictional historical drama and quite frankly, the show posts the warning after every episode. This is a terrific character study above all.