One is the unruly princess loved by thousands of people. She was supposed to be with Wang Chen and his son, living a life that was envied by everyone.
One is a royal guard with a gender secret. She was supposed to hide the secret and devote her life to the court.
They were supposed to be two parallel lines that did not intersect with each other, but because of an assassination, the fate of the two people was linked together.
From the beginning when they didn't look at each other, to the later life-or-death commitment, the disparity in status and gender taboos became the biggest obstacles for them to be together. When I tell you my secret, will you still choose to continue to love me?