Asteroid 101, in the distant galaxy of Kraken is a sombre and dangerous place... Many advance teams from the Planetary Mining Corp. have gone missing, and mineral explotation and colonisation of this remote outpost has been seriously delayed.

What kind of dreadful alien forces have wiped out those advance teams? As a mercenary, you'll soon find out. When playing "Plasma", your mission is to prepare Asteroid 101 for the arrival of the settlers, and if that means wiping out every single trace of alien life with the help of your trusty plasma gun, so be it!