A Go piece transports Gu Hai, a business elite from the 21st century, to a strange world. In this world, Gu Hai becomes an incredibly wealthy merchant. During a national war, he uses his exceptional strategy and financial resources to help the Chen Kingdom escape annihilation. Because of his extraordinary wisdom, Gu Hai is chosen by a celestial being to complete a mysterious mission. A heavy conspiracy and bloodshed are about to unfold. Faced with the choice between righteousness and friendship, what will Gu Hai choose? Will he be able to complete the mission and receive further guidance from the celestial being?