Shen Qingci, the daughter of the former imperial physician, was falsely accused of treason. On the night when her family was exterminated, she was personally handed poisoned wine by her sweetheart Xiao Jingyan. Reborn and returned to three years ago, she hid half of the Blood Bone Jade in her heart and broke the back of her hand in exchange for a word of protection from Xiao Chenyuan, the "waste" second son of the Zhenbei Hou Mansion.
Xiao Chenyuan, whose meridians were blocked and had been pretending to be ill for seven years, secretly had ironclad evidence of the prince's rebellion. The two of them each have their own sharp edges, from "each taking what they need" to protecting each other with their lives. Until Shen Qingci discovered that Xiao Chenyuan hid under Xiao Chenyuan's pillow the begonia flower button that she had held in her hand before she died in her previous life. Deep in the flower's stamen, there was engraved in her mother's blood "The prince's conspiracy, the ironclad proof is in his heart".
