Modern young man Lin Feng traveled through time and became a secret guard in the cold palace, and unexpectedly encountered the imprisoned Princess Yunzhao. The collision of the idea of equality and ancient superiority, the game of loyalty and the struggle of human nature, and the redemption of restraint quietly emerge in the desperate situation. When the princess's despair breaks out of her cocoon and awakens, and the secret guard's forbearance turns into a desperate move, what kind of storm will the hidden identity and modern objects set off in the whirlpool of power in the palace?