A modern-day office worker is transported to ancient times and becomes a down-and-out live-in son-in-law. He awakens a dual-enhancement system that can turn a single horse-drawn carriage into a hundred-carriage convoy, a broken bow into a divine weapon, and a thatched hut into a luxurious mansion. He initially plans to take it easy and enjoy his newfound fortune, but circumstances force him to gather refugees, build a small town, and train a powerful army. From the bitterly cold lands of the northwest, he fights his way all the way to the capital. He never wanted to become emperor, but his two breathtakingly beautiful wives-to-be won't let him off the hook!