Kian, a recent college graduate, returns to his hometown to grow watermelons. But when he accidentally unlocks a mysterious system, his small farm becomes a portal through time. Ancient emperors — including King Quinn and Emperor Chad — are drawn into his world. Posing as a divine sage, Kian shares modern strategies and visionary policies with them, reshaping their reigns from the shadows. His humble melons sell for fortunes, saving his village from debt. As history bends to his will, humanity begins to wonder: could this farmer be immortal?