Ye Qing, a 10-year-old girl returning from the border, is used by An Minghua as a tool to defraud an inheritance, accidentally becoming the An family's "true heiress". Facing snobbish parents and a hostile adoptive sister, she gradually wins over her biased family with her hacker talent, extraordinary courage, and kind nature. Uncovering conspiracies and punishing evildoers, she creates repeated miracles in campus and commerce, not only gaining the sincere affection of Grandpa An and her brother, but also finding her biological parents. This journey filled with growth and warmth witnesses how a border girl becomes a treasure guarded by everyone.