"Roger Wilco's escape pod from the end of SQ2 is floating in space until captured by an automated garbage freighter. Roger's first task is to repair an old ship found there, the Aluminum Mallard (a play on the Millennium Falcon) and leave the scow. However he will meet some difficulties, as the Arnoid the Annihilator (an Arnold Schwarzenegger-like android terminator) hunts him for not paying for a whistle in SQII. He eventually discovers the sinister activities of a video game company known as ScumSoft run by the "Pirates of Pestulon".
Pestulon, a small moon of the volcanic planet Ortega, is covered in soft, moss-like vegetation, and dotted with twisted tree-like growths throughout. Elmo Pug, the CEO of ScumSoft, has abducted the Two Guys from Andromeda and is forcing them to design their awful games. Roger somehow gets inside the supposedly impregnable ScumSoft Sea of cubicles and rescues the two programmers. In the process, Roger must fight Elmo in a game that combines giant Mecha-style combat with Rock 'Em Sock 'Em Robots."
Source: Wikipedia, "Space_Quest_III:_The_Pirates_of_Pestulon," available under the CC-BY-SA License.