Gu Xiaoming, a layabout who resigned impulsively and stayed at home, finally picked up the keyboard and embarked on the path of no return as a novel writer. All this is also thanks to the thousand-year-old ghost he accidentally brought home. As a good helper in writing, the old ghost has been wandering in the world for thousands of years. How many vicissitudes of life and personnel changes has it experienced? Is there a bond between Gu Xiaoming and Lao Gui?