Waking up, Wu Bai unexpectedly turns into the Demon King in the game, destined to fight a decisive battle with the hero. To rewrite the ending, she finds the young hero Gan Lu eight years in advance, but through living together turns the future "opponent" into family. Even more unexpectedly, her appearance makes the strongest magician Xin Yan, trapped in countless cycles of fate, break free from bondage for the first time. The three of them embark on an adventure to find the truth, protect companions and gain trust in crisis after crisis, and also discover that true courage is not accepting an arranged life, but creating a new future with kindness and choice.