She was the daughter of a sinner who was exiled as a scapegoat. She was brought into the palace by Prince Jing in the name of "Happiness". Everyone said that she was a tool used by the prince to ward off disasters. On their wedding night, she mistakenly hit a trap and knocked down his mask. She was shocked to find that under the mask was the prince who had been missing for many years! She thought she had grasped a life-saving straw, but unexpectedly the prince imprisoned her in an instant and forced her to hand over the "Secret Edict of the Late Emperor". In a desperate situation, she unexpectedly discovered that the jade pendant she was carrying was in agreement with the prince's token - it turned out that she was the secret guard commander secretly trained by the late emperor, and the "prince" in front of her was just a stand-in arranged by Prince Jing! In the end, the real Prince Jing took off his mask and appeared. He was actually the young general who had saved her but was forgotten by her: "From the beginning to the end, the only one I want to protect is you."