Shen Yao, a modern woman who lived carefree and self-centered, agrees to bind with the mysterious Childbirth System at the end of her life in exchange for continued existence across multiple worlds. Now transmigrated into the Great Jing Dynasty as the eldest legitimate daughter of a fifth-rank official, she finds herself selected as a lowly Seventh Rank Changzai consort in the imperial harem. With only days before entering the palace, Shen Yao uses system-granted pills to enhance her constitution, repair bodily flaws, and perfect her appearance, determined to win the Emperor's favor.

Pregnancy is the fastest path to rank advancement in a harem where only consorts of fifth rank and above can raise children. Navigating a treacherous household with a displeased grandmother, scheming concubines, and imperial succession struggles involving royal grandsons, Shen Yao relies on her pragmatic, proactive nature and hidden abilities to survive and rise. In this world of court intrigue and clan politics, she intends to turn her cannon-fodder status into victory and become the ultimate winner in life.