To save her mother, Su Ruolan is forced to marry in someone else’s place to bring good fortune. She uses acupuncture to wake the comatose Mu Chengzhou, but ends up having her identity stolen, her child taken from her, and is thrown into prison. Three years later, after her release, she searches for her child and enters the Mu family as a nanny by chance, where she meets Mu Chengzhou again. While using her medical skills to protect her child, she uncovers the truth behind what happened back then.