Lin Niannian, who had just graduated from university, found a job and moved into a newly rented cheap house due to financial difficulties... At night, she heard a strange "buzzing" sound coming from next door and discovered that there were two strange neighbors living next door. Later, she found out that they were actually the Immortal Lord and the Demon Emperor, enemies who had hated each other for three thousand years in the fairy world, and a series of events occurred from this.
