Demon Chang Mian has been bound and enslaved in the Painting Workshop since she was a child. Now she is the best skin painting artist. The Demon King orders the capturing of General Shouyang's fiancée Qiu Sang. In the accident Chang Mian kills Qiu Sang and decides to take her place.

As the underworld ferryman who has broke up their love, Man Shu meets Sha Hua, who can give them warmth, one day. The two are destined to have to go through various obstructions by the Mengpo. As the two undergo various tests and eventually survived the eternal night, to save the underworld, Shahua became a ferryman, guarding Manshu.