I just the director of a nursing home.

Thousands of years ago, the Demon Lord led the demons in a war with the immortals. The Lord of the Pantheon, Ye Buwen, led the immortals in a war with the demons. After they perished together, a remnant soul fell into the human world. The left and right protectors of the Pantheon searched for the whereabouts of the remnant soul of the Lord in the human world and used a nursing home as a cover.

Later, they found that the remnant soul had been absorbed into the body of the mortal Ye Chen, so they gave the nursing home to Ye Chen and asked Ye Chen to learn the Nine Dragon Art. Ye Chen mistakenly thought it was square dancing. . .