Xu Changqing endured countless tribulations and ascended to become an Immortal Emperor. However, during his ascension, he discovered that one of his 300,000 incarnations had yet to complete its final trial in the mortal world. To achieve his ascension to the Immortal Realm, Xu Changqing takes control of that incarnation and decides to resolve the matter himself, only to discover that its original owner was a live-in son-in-law who had been constantly humiliated and bullied by his wife's family. To put an end to their mistreatment, Xu Changqing reveals his Immortal Emperor powers and fiercely strikes back, making his wife's family pay for their actions. At the same time, he helps the Zhou family, who supported him, eliminate the wicked cultivators plotting against them.