The evil Space Slug forces, led by the Sultan of Slime, have launched a sudden attack on humanity, quickly occupying the majority of planets in the galaxy, and forcing the Sidereal Shock Troops to recruit soldiers to counter the threat. From this point, the player receives various orders, from rescuing stranded agents on various cartoon-like worlds, retrieving upgrade parts for the ship and the player, and repairing various machines which help keep the universe running. (wiki)