Watch Royalteen: Princess Margrethe Online Free. Last year’s prom ended in major drama for Princess Margrethe. She doesn’t dare tell anyone about what happened the night she was hospitalized. Suddenly the Danish royal family plans to visit Norway, and Princess Margrethe will finally get to meet the handsome Danish prince that she’s been chatting with for months. As family drama starts piling up for the royal Norwegian family, she finds herself lost between taking care of her family, portraying herself as a strong princess, and being vulnerable in her quest for love.