A palace change made the orphan Su Mingning become the adopted daughter of the royal family, and she stepped into the splendid palace as a princess. She thought that the prince's brother Li Chengyin was her only support in troubled times, but she didn't know that from the moment she stepped into the palace gate, she became an inescapable butterfly in his palm.
He was the crown prince above all others, yet he was willing to subvert the rules for her. From the intimate feedings and gentle stories as a child to the overbearing confinement and passionate kisses as an adult, Li Chengyin surrounded her layer by layer with paranoia and affection. When the marriage decree came down, the possessiveness in his eyes completely exploded, "A Ning can only be mine."
In the palace with strict etiquette, their relationship is like a rose with thorns. The more they struggle, the deeper they fall. Although Su Mingning is as weak as a little white rabbit, she gradually wakes up in the entanglement of love and ethics. Facing Li Chengyin's undeniable love, how should she break free from this tender cage, and how should she respond to this forbidden love? Under the shadow of the moon in the deep palace, a game about love and bondage is slowly unfolding