Most likely not. 'Margrete: Queen of the North' is probably a work of creative imagination or has elements of fiction woven into it. It might draw inspiration from historical events or figures but isn't a straightforward true story.
Well, without more context, it's difficult to say precisely. It could potentially center around the adventures of this so - called 'queen of the north'. Maybe she's on a quest to save her kingdom from a dark force. Or it could be a story about her rise to power in the north, detailing the obstacles she overcame to become the queen.
Her father's actress was Zhao Lusi. Zhao Lusi was a young actress from mainland China. In recent years, she had performed well in many TV series and movies, and gradually became familiar with the audience. Her performance in her father's work, the Queen of the Northern Garrison, was also well received. She had successfully created an image of a dignified and gentle empress.
In the 'queen of the north short story', the queen is the central figure. There may be a group of rebels who oppose her rule, thinking she's not fit to lead the northern land. Then there could be a foreign prince or princess who comes to the north and has an impact on the queen's decisions. There might also be a commoner who rises to become an important figure in the queen's court, perhaps through acts of great courage or intelligence.