The heroine Xu Yuan'er originally lived a peaceful life in the modern world, but due to the impermanence of black and white, she seduced the wrong soul. In compensation, the underworld bound her to the "system" and began to travel through different worlds to complete the mission of rescuing villains and saving the world. Only after success can she be completely reborn and even rank among the immortals. However, the villains attempted to destroy the world and tried their best to hinder Xu Yuan'er's reformation. Time is running out, and if the mission fails, she will be trapped in the underworld forever. Xu Yuan'er was emotionally indifferent in the early days. In the process of dealing with the villain, he was often misunderstood as having ulterior motives, which made the task more difficult. Even if they succeeded in influencing some villains, they found that some people could no longer turn back. However, Xu Yuan'er relied on her high IQ and the abilities given by the system to grow up in crisis after crisis, working hard to rewrite the fate of the villains, and moving towards the goal of being reborn and ranking among the immortals.