During the Republic of China era, five-year-old Xie Zhaozhao returns to the commander's mansion with her mother and unexpectedly acquires a "Koi System" capable of bringing good fortune. Innocent and lively, she uses her kindness to influence those around her, helping her family break out of difficulties and regain hope, while also bringing laughter and warmth back to the once-distant commander's mansion. From a little girl who has just arrived to the "lucky miss" cherished by everyone, Zhaozhao learns through repeated interactions that true blessing is not miracles themselves, but mutual protection, cherishing, and companionship.