To fulfill his mother's dying wish, Lu Chengshan disguises himself as a cleaner and rushes to his younger brother's wedding, only to be misunderstood. His younger brother protects him by breaking off the engagement, missing a golden opportunity for cooperation. After the brothers recognize each other, the younger brother wins a racing championship, donates his liver to save his older brother, works together to defeat a power-grabbing conspiracy, gives back to the orphanage, and finally marries Zhiyi. The story focuses on family affection and responsibility, delivering positive energy for good.