OrcmastergroM has created an extensive Starcraft map campaign named: Revengers. It is hosted by Blizzplanet. It contains 17 missions and 20 maps. The map campaign is conveniently compressed in a .ZIP file (39.8mb). To read the storyline read more details.
OrcmastergroM is making a new campaign soon in the Warcraft III engine, based on the Warcraft 1: Orcs and Humans storyline.