Top modern secret agent and medical doctorate holder Yeying meets with an unexpected accident and transmigrates into Leng Ruoli, the foolish legitimate daughter of the Tianwu Kingdom's general's estate. The original host suffered all kinds of persecution from Concubine Liu, narrowly dying in a ruined temple. Leng Ruoli, who awakens a portable medical system, relies on her superior medical skills to save the cold Prince Jun Mohai and performs a caesarean delivery that shocks the capital. On one hand, she tears apart the vicious Concubine Liu and stepsister Leng Ruoshuang, rescues bullied maidservants, and counters the scheming of Prince Jun Moyao; on the other hand, she treats difficult and complicated illnesses, plotting step by step to rewrite her tragic fate. When her general father returns to the capital, she resolutely calls off the distressing engagement, living out her own sharpness amidst power struggles and crises.