Jade Stirling is reborn as a newborn baby. To reclaim her identity as the heiress of the Stirling Clan and take revenge on her enemies from her past life, she hides her mature mind behind the appearance of a soft, cute infant, using her cries and clingy behavior to sabotage nurse Gwen Crawford's baby-swapping plan. Under the care of her parents Ethan Stirling and Wren Stirling, she skillfully guides her family to see through repeated crises, including conspiracies from the household mole Mrs. Carter and her uncle Nolan Stirling's family. Faced with her grandmother's favoritism and the secret schemes of her cousin Jasper Stirling, Jade navigates the undercurrents of the family as an infant, helping her father uncover clues, gaining her grandfather's recognition and shares at her full moon banquet, and protecting the happy life that belongs to her.
