Modern elite brother and sister unexpectedly both time-traveled, becoming the children of a powerful official family, and a family disaster is imminent! The sister is forced to spend the huge wealth of the family, while the brother has to find a way to gain the emperor's favor, and if they fail the task they cannot return to their original world. One seemingly spending money like water, quietly taking money for disaster relief and construction; the other not relying on sweet words, moving the monarch with hard-core knowledge. The two resolve disasters, counter various calculations, reverse the family's destiny, and revitalize the place at the same time. Seeing that the mission is about to end, unexpectedly, another otherworldly visitor has already quietly sneaked in, pulling open a greater suspense suddenly.