Heroes in Black is a Singaporean television series loosely inspired by a Chinese short story in Funny History (諧史) by the Song dynasty writer Shen Shu (沈淑).

The main character in the series is a masked thief called "Wolaiye" (literally "Here I Come") who steals from corrupt officials in a city, Zhencheng, to help the poor.

Song Dou aspires to serve his country but feels disappointed when he sees that the government is dominated by corrupt officials, so he decided to become a vigilante while pretending to be a constable at the same time.

On the execution day, Song Dou, Feng Pobu, Liu Feiyan and their friends show up and manage to convince the Emperor that Prince Kang is innocent.

The newly enthroned Prince Kang intends to reward Song Dou and Feng Pobu by granting them titles and honours, but they reject his offers because they are only interested in winning Liu Feiyan's hand-in-marriage.