Rich second-generation heir Qian Bushao boards a time machine with his servant Hua An, hoping to experience life in ancient times. But the machine is swallowed by a black hole and plunges into the underworld. The two have not yet reached the end of their allotted lifespans, according to the King of Hell's Book of Life and Death. Taking the view that it makes no difference where you live, they embark on an absurd and hilarious adventure in the netherworld.
