Six-year-old true heiress Gu Youyou is reborn back into the Marquis's residence, carrying three wen coins and only wanting to leave once she saves enough. Unexpectedly, her entire family can hear her self-deprecating yet sensible inner voice, learning of the fake heiress Gu Xueer's past-life conspiracy. From guilt to frantically spoiling their sister, her parents and siblings expose the truth of the swapped children all the way and shatter the enemy nation's treacherous plots. Ultimately, she is enfeoffed as Princess Funing, and the family is joyfully reunited. The adorable baby heals the whole family, blending hilarious comedy with tear-jerking moments.