Su Yun, who visited all the righteous immortal sects, was still unable to find the reason for his talent to dissipate. However, when he escaped into the Demon Sect and killed the leader of the immortal sect, he accidentally returned to fifteen years ago. On this day, Su Qing'er was killed. For three years, in order to protect the last family member, he decided to subvert everything, but before that, he had to complete one thing he had to do...