In 2199, the Earth is under severe attack by the forces of the planet Gamilon. Earth's space fleets are outnumbered, outmatched and outgunned. In the first episode, the audience is shown the last battle of the remains of the earth fleet and the destruction of all ships, save one that limps home.
Planet bombs (asteroidial chunks of rock with nuclear warheads inside, apparently launched by mass driver) have reduced the Earth's surface to a radioactive wasteland. The seas have been boiled away, and humanity lives cowering in underground cities. (The term geo front was not in use at the time, but the underground cities are perfect examples.) But even this reqoubt is crumbling. Radiation is seeping downward into the Earth, and the Underground cities will become as irradiated as the surface in approximately a year's time. Humanity seems doomed.
A mysterious message capsule from the Queen Stasha (Queen Starsha in the English adaptation) gives earth a ray of hope. There is a device on her home planet called the Cosmo Cleaner D (Cosmo DNA) which can completely restore Earth. But she cannot send it herself. Earthmen will have to come and get it. She sends along plans for a faster than light star...
