Shen Zhiyi woke up from a fire and became the fourth princess of Zhenbei Palace who came back from the dead.
The first three princesses, without exception, all died in mysterious circumstances.
The old jade plaque with "Beichen" engraved on her palm is the only anchor - it generates heat, displays words, and transmits her heartbeat late at night.
Seven jade seals, a Beiku buried under the Ancestral Temple, and the truth about the Huo family's destruction seventeen years ago.
She doesn't want to investigate the case, she just wants to live.
But when she opened the first seal, the cold-faced feudal king behind her suddenly held her hand: "You can't open this door alone."