In the Marquis of Jing’an’s residence in the kingdom of Qinglan, the illegitimate daughter Su Weiwan has lived in the shadow of her stepmother and legitimate elder sister since childhood. Her mother died under suspicious circumstances, and everyone sees her as an orphan with no one to rely on. She has endured endless contempt and abuse. To uncover the truth behind her mother’s death and protect the few loyal servants at her side, she conceals her sharpness, pretending to be timid and useless while secretly studying medicine and poison, as well as ingenious mechanisms. One day, she accidentally activates the jade pendant her mother left behind, unlocking clues to a secret treasure trove from the previous dynasty and bringing danger to her life. Her stepmother’s relentless pressure, her elder sister’s framed accusations, the family’s ruthless struggle for profit, and even the hidden power plays at court all push her toward desperation. Su Weiwan stops holding back, using medicine and poison as blades and strategy as her shield. She moves carefully through the inner courtyards, exposes her stepmother’s schemes, clears her mother’s name, wins people over, and builds her own power. She must not only turn the tables in the household rivalry, but also be drawn into the political machinations at court and uncover the shocking secret behind the previous dynasty’s mysteries. In the end, the illegitimate daughter who once lived at the mercy of others transforms into a legendary woman who controls her own fate and shapes the course of the court.
