Wu Jin traveled to a parallel world and became the biological son of the chairman of Binhai Group, but was thrown into the marketing department as an assistant by his evil stepmother He Yun in the name of "grassroots experience." His father is in a coma, the company has changed hands, and he is surrounded by informants. At the beginning, he was robbed of credit by his boss and dumped by his colleagues. He accidentally activated the [Classic Echo System] - as long as he reproduces the wisdom of classics in actual workplace combat, he can extract the corresponding skills. When others were having meetings, he used "Sun Tzu's Art of War" to dig holes; when others were taking sides, he used "The Romance of the Three Kingdoms" to drive a wedge; when others were doing accounts, he used "Das Kapital" to force his opponents to jump on their own. From the lowest-level assistant to the department head, to the youngest vice president of the group, Wu Jin took back what belonged to him step by step under the eyes of his stepmother. But when he was ready to send his stepmother to prison with evidence, the system suddenly popped up a hidden prompt: the stepmother was just a pawn, the real operator came from outside the group, and another enemy with a golden finger from the same origin was approaching. Revenge has just begun.