For years, Commander Therle and his people have been searching for a new world to call home. Each time they get close, their enemy, Doh, pushes away Therle's ships. Recently, a sensor scan detected new terra-class planets. Therle sent scout ships to check them out, but Doh once again scattered his Blocks across the solar systems to stop the ships. Before the scout ships can reach the planets, they must destroy the Blocks.