Agricultural student Lin Wan traveled through the late Northern Song Dynasty and became an orphan whose parents died and his property was occupied. Facing his vampire uncle and the impending troubled times, he hid his identity as a time traveler and relied on his knowledge of modern agriculture to start with a basket of sprouted "yam". Grow high-yielding grains, improve agricultural tools, develop side businesses, run rural schools, weave an industrial network in every detail, and thrive among clans. When the Jin soldiers marched southward, what they guarded was no longer just the three acres of thin farmland, but the hope of the people behind him to have abundant barns.