Chen Yuan, a social worker with a monthly salary of 4,000, was accidentally dragged to work part-time in the underworld by a bull-headed horse-faced man. Relying on his cleverness and experience in the world, he becomes a brother-in-law with the Yin Commander and a confidant with the judge. He goes through all the obstacles and tests to get to the shore, starting a crazy mode of continuous rotation between the Yin and Yang worlds. Not only did he clean up the corrupt officials in the underworld without mercy, but he also went to heaven to clear out the dirty corners one by one. He transformed from an unknown ordinary student into a legend of migrant workers who shocked the heaven and the underworld.
