At seventeen, Su Nian suffered a tragic death in her past life due to the schemes of her stepmother Bai Mengdie and her family. After her rebirth, she rejects a wealthy engagement and accidentally acquires a jade bracelet space containing a spiritual spring. Armed with the Fu family's ancestral acupuncture medical skills, she cures terminal patients and builds up her confidence, while tearing off the Su family's hypocritical masks, unearthing the conspiracy of the swapped children, and investigating the truth behind her biological mother's murder. Along the way, she rescues Shen Hanzhou, the unfavored illegitimate son of the Shen family, and the two redeem each other. Faced with a biased father, a vicious stepmother, a spoiled stepsister, and a fake brother, Su no longer endures and retaliates for revenge, while protecting her grandfather who cherishes her. Relying on space and medical skills to defy heaven and change her fate, she settles accounts one by one with everyone who owes her a debt.