In a fictional war in outer space, a group of survivors must pilot a giant robot called the Ideon to defend themselves against an alien race. As the war escalates, they face loss, rebirth, and the hope for a new world.

A movie recap of the Space Runaway Ideon TV Series. Humanity's pursuit of knowledge leads them to the planet Solo, where they find mysterious remains of a long dead alien civilization, including the 3 part super robot 'Ideon', and a powerful warship. Using these, the Earthlings sent to investigate the ruins defend themselves in their constant conflicts against powerful aliens called the Buff Clan, who are in pursuit of 'Id', the mysterious energy that powers the Ideon.