During the Jinghe period of Dayin Dynasty, the Shen family, which used to be all powerful in the past, fell overnight and was accused of collaborating with the enemy and treason. The legitimate daughter of the Shen family, Shen Qingci (the heroine), was only ten years old at the time. She was rescued by a loyal servant and hid in a water town in the south of the Yangtze River. She lived under the name "Su Ci" and devoted herself to studying machinecraft and poison in order to one day find out the truth about the family injustice. Twelve years later, a "Jade Chan serial murder case" broke out in the capital. The deceased were all vaguely related to the old cases of the Shen family, and all the clues seemed to point to the powerful and treacherous Prince Jing - Xiao Jinhan (the male protagonist). Shen Qingci returned to the capital to investigate the murder case, but unexpectedly discovered that Xiao Jinhan was not only her "number one suspect", but also the mysterious young man who saved her from the sea of fire. As the investigation deepens, she is involved in the whirlpool of court intrigues and grievances. Xiao Jinhan's attitude of being both good and evil, the many mysteries surrounding him, and the seemingly invisible fateful bond between the two make her nervous at every step between revenge and emotion. This is a contest that uses wisdom as the blade and human hearts as the chess piece. When the ice of truth gradually breaks, what is buried under the snow is evidence of treason, or is it a shocking secret that can shake the country?
