A war between two factions outside the Solar System threatens Earth. A wayward missile in that war hits the sun (and destroys a starliner en route), and this causes the sun's nuclear fusion to go out of control. In one Earth year, unless the fusion is corrected, the sun will burn the Earth and all life will cease to exist. Also, in three years, the sun will explode and destroy the solar system. The Argo, now officially captained by Derek Wildstar, is commissioned (with new cadets) to search for a new home for the people of Earth.
Season 0
Season 1
Season 2
Season 3
Solar System Faces Destruction The Great Battle in the Milky Way Star Force Embarks at Dawn Shoot for Planet Mars S O S Legendra! Great Battle Near Planet Brumas The Rough Seas of Alpha The Last Pioneer Battle at Barnard's Star Dagon's New Fleet Attacks Back Yamato in Danger Near the Cygnus A Penal Colony in Space Dreadful Bolar Federation The Subspace Submariner: Garuman Wolf Star Force Becomes a Prisoner A Fete Day for Desslar Desslar's Empire at the Eleventh Hour The Angry Sun On the Way to Planet Phantom Planet Phantom It Is Shattered Hope Farewell Planet Phantom Battle at the Scalageck Strait The Secret of Planet Shalabart Yamato, Hit the Sun
Solar System Faces Destruction The Great Battle in the Milky Way Star Force Embarks at Dawn Shoot for Planet Mars S O S Legendra! Great Battle Near Planet Brumas The Rough Seas of Alpha The Last Pioneer Battle at Barnard's Star Dagon's New Fleet Attacks Back Yamato in Danger Near the Cygnus A Penal Colony in Space Dreadful Bolar Federation The Subspace Submariner: Garuman Wolf Star Force Becomes a Prisoner A Fete Day for Desslar Desslar's Empire at the Eleventh Hour The Angry Sun On the Way to Planet Phantom Planet Phantom It Is Shattered Hope Farewell Planet Phantom Battle at the Scalageck Strait The Secret of Planet Shalabart Yamato, Hit the Sun