Su Qinghe bears a family blood feud and lives among the commoners, yet she steadfastly upholds a benevolent healer's heart. On a freezing night, regardless of the risks, she rescues Lu Shiyan, the heir of the Jing'an Marquis who was ambushed and heavily wounded, and is brought into the peril-fraught Marquis's estate. Facing secret plots and multi-sided harassment from Aunt Liu and others within the residence, Su Qinghe remains calm and composed, relying on her exquisite medical skills and sharp intellect to repeatedly neutralize frames and plots. Lu Shiyan, grateful for her life-saving grace, stands firmly by her side, and the two come to know and understand each other deeply as they join hands to counter conspiracies. The story conveys the power of staying true to one's foundation, remaining neither arrogant nor humble when facing trials, and guarding kindness and justice amidst turmoil.