Strategic researcher Xiao Mubai died of overwork and transformed into a frail and sickly son of a prince. On the surface, he was indifferent to the world, but in fact, he had no plans. Special forces instructor Yan Yunlie sacrificed his life to save others and transformed into the reviled Ninth Prince. He seems reckless and passionate, but in fact he values love and justice. The two heroes met, one stirred up the court with his machinations, and the other swept the battlefield with iron and blood. When the Beirong cavalry moved south and undercurrents surged in the DPRK, they chose to stand side by side - you as the chess player and I as the breaker, fighting together in this troubled chess game. Let's see how Ssangyong stirs up the storm and creates a prosperous era!
