Ning Tian was kicked out of his home by his parents and thrown to the Demon Suppression Pass to fend for himself. However, he killed countless demons here, cultivated to the divine realm, and guarded the border for hundreds of years. In order to let their younger brother Ning Chen replace his marriage contract and merit, his parents came to force him to give up his merit. Ning Tian signed a love letter to sever the relationship. Ning Chen pretended to take credit, but had no real talent. After Ning Tian went into seclusion, the monster army invaded in large numbers, and Ning Chen was defeated in one battle. At a critical moment, Ning Tian, who was rumored to be dead, suddenly appeared and killed the Demon Emperor instantly. How will Ning Tian deal with everyone in the Ning family in the end?