Reign is the story of Mary Stuart, Queen of Scots, who was the daughter of James V and reigned over Scotland in 1542-1567. She lived a difficult life filled with treachery in the courts and married only to be widowed in a few short years. As the leader of protestant Scotland she was a huge threat to the British throne. Eventually, Queen Elizabeth I ensure Mary was out of the way by executing her publicly.
The series accurately encapsulate most of the story, adding more flavors and more modernity. Adelaide Kane, who portrayed the queen, looks stunning in her regal outfits.