Lin Yue, a modern business and chemical industry expert, transmigrates into the body of the least favored fourth son of the Minister of Revenue's household in the Great Yong Dynasty. His birth mother died young, his monthly allowance was cut off, and his residence fell into ruin. For years, his vicious stepmother and domineering elder brother have bullied him, trying to torment him to death and seize the family fortune. The original owner died of illness, full of resentment, giving way to a reborn Lin Yue with a mature mind and a wealth of modern knowledge. All he wants is to make money, escape, and live freely in seclusion with his loyal servant. But the powerful family keeps tightening its grip, while the great clans at court endlessly scheme against one another. From then on, Lin Yue amasses a fortune with cutting-edge business tactics, dazzles the capital with peerless poetry, and improves firearms and people's livelihoods with advanced knowledge. He face-slaps the powerful, shakes up the court, foils the great clans' plots, and quells the northern tribes' incursions. From a discarded son anyone could bully, he becomes a carefree young master with wealth and power at his fingertips, living entirely on his own terms.