Yang Wen inherits a film and television company on the verge of bankruptcy. With no money, no actors, and no projects, he is preparing to sell the company when he unexpectedly becomes bound to the Eternal Stars System. As long as he receives a film or television casting notice, he can summon real people from ancient history to work as extras in the modern world. Qin military scouts, soldiers defending city walls, and refugees fleeing famine step out of the depths of history and onto film sets, using their genuine experiences to deliver the most authentic performances. They can also take modern supplies back to their own eras. At first, Yang Wen only wants to make enough money to survive. But as more and more people are summoned, he gradually discovers that this extraordinary extras business spanning thousands of years is quietly changing the course of history.