It's Hard to be a Queen

The assassin, Yun Lan, was shot and killed by her lover on her wedding night. She was transformed into the second young miss of the Residence of Prime Minister, Yun Lan. He had killed someone and escaped, but he still had Joyful Union Powder on him. Circling around to help Yun Lan get rid of He Huan San. That person was still her supposed husband. He was currently facing Crown Prince Feng Hen. If they couldn't escape, what could they do?