Modern young man Hai Qi unexpectedly transmigrates to the world of the TV series The Big Yangko and becomes the brother of its protagonist, Hai Mao. Armed with his foreknowledge of the plot, he resolves to change the fate of Hutou Bay. In an era of feuding clans, Japanese pirate raids, and raging warfare, Hai Qi protects Hai Mao from one crisis after another while trying to settle the generations-old feud between the Wu and Zhao families and save those who met tragic ends in the original story. Caught between the shackles of feudal clans and the tide of resistance against Japan, he uses his modern wisdom and devotion to his brother to write a legend on this land of suffering and passion, healing old regrets and rewriting history, as the Red Yangko plays a different melody of fate in a new era.