"Space Runaway Ideon" is a 1980 anime series created by Yoshiyuki Tomino, set in a distant future where humanity has colonized other planets. The story begins on the planet Solo, where a group of colonists discovers a mysterious giant robot known as the Ideon and three smaller support vehicles called the Solo Ship. These machines are remnants of an ancient civilization, the Buff Clan, who once inhabited Solo. The colonists, unaware of the Ideon's true power, are soon attacked by the Buff Clan, a militaristic alien race seeking to reclaim the Ideon for its immense energy source, the Ide.

The Buff Clan believes the Ideon holds the key to their survival and religious prophecies, leading to a relentless pursuit of the colonists. The colonists, led by a young boy named Cosmo Yuki, are forced to flee Solo aboard the Solo Ship, using the Ideon to defend themselves. Cosmo, along with other key characters such as Bes Jordan, a skilled pilot, and Karala Ajiba, a Buff Clan princess who defects to the colonists' side, becomes central to the unfolding conflict. The Ideon's power grows as it taps into the Ide, an infinite energy source tied to the universe's creation, but its use also brings catastrophic consequences.

As the series progresses, the conflict escalates into a cosmic struggle, with the Ideon's power threatening to destroy both the colonists and the Buff Clan. The narrative explores themes of war, survival, and the destructive nature of humanity, as both sides grapple with the Ideon's potential to annihilate entire civilizations. The story culminates in a dramatic and apocalyptic finale, where the Ideon's full power is unleashed, leading to a cataclysmic event that reshapes the universe.

The series is notable for its complex characters, moral ambiguity, and exploration of existential themes. It blends mecha action with philosophical undertones, creating a narrative that is both intense and thought-provoking. The Ideon's role as a symbol of both creation and destruction drives the story forward, making "Space Runaway Ideon" a significant work in the mecha genre and a precursor to later series that delve into similar themes.