Su Qingge, the legitimate daughter of the Marquis of Yongning, mistrusted her concubine Su Yuran and her fiancé Xiao Rongjin in her previous life, and was robbed of the "Jade Step Exquisite Pendant" passed down by the family from generation to generation. The two of them teamed up to frame her, causing the entire household of the Hou House to be executed. She was imprisoned in the Cold Palace, and eventually died under the Jade Steps by drinking poison. Before she died, she looked at her proud enemy on the palace wall and swore in blood that if there was an afterlife, she would make the betrayer pay with blood and protect the family.
Once reborn, Su Qingge returned to the age of fifteen and the eve of the hairpin ceremony. There were only five days left before the adult handover ceremony of the "Jade Step Linglong Pendant". In this life, she put aside her innocence and weakness, and used her real name "Qing Ge" as a shield to navigate the intrigues in the inner courtyard of the deep house and the whirlpool of power above the court. She first saw through the allergenic poison hidden in Su Yuran's hairpin attire and disgraced him. Then, at the handover ceremony of the attire, she used her blood to activate the secret mechanism in the "Jade Order Exquisite Pendant" and revealed the shocking secret of the border defense plan hidden in the pendant, which shocked the government and the public.
On the way to take revenge, Su Qingge reunited with Xiao Jue, the King of Rui who died in the battle to protect her from the encirclement in her previous life. From the initial mutual testing to the later sharing of life and death, the two formed an alliance and joined hands to fight against Murong Jin's ambition to seize power. They exposed Su Yuran's identity as an undercover agent colluding with the enemy. In the secret war between the princes and the harem turmoil, they resolved layers of fatal crises. In the end, Su Qingge helped Xiao Jue put down the palace rebellion and ascended the throne as emperor. She transformed from the legitimate daughter of the Hou Mansion who died unjustly to the queen in charge of the Phoenix Seal on the Jade Steps. She not only restored the family's glory, but also created a prosperous and beautiful relationship with Xiao Jue.
