Aoki Ryūsei Esu Pī Tī Reizunā), sometimes translated as Blue Meteor SPT Layzner, is an anime series produced by Sunrise between 1985 and 1986. Its original creator was Ryōsuke Takahashi who served as the director.
The story takes place in 1996, where humanity is advanced enough to develop long-range space travel, as well as bases on both the Moon and Mars. However, the Cold War tensions between the United States and the Soviet Union have not ended; rather, they have escalated as both sides build military facilities in space, and the shadow of nuclear conflict looms over humanity, both on and off Earth.
Meanwhile, on Mars, an exchange program created by the United Nations to promote peace and understanding is about to begin; the "Cosmic Culture Club", consisting of 16 boys and girls, as well as their instructor Elizabeth, arrives at the UN Mars base, and are being welcomed by the staff. Among the passengers is Anna a 14-year-old girl who serves as the narrator for the story.
Suddenly, four unidentified humanoid robots classified as Super Powered Tracers are detected, engaged in fierce combat with each other. The UN base is caught in the crossfire and quickly destroyed, killing all but six members of the "Cosmic Culture Club"—Elizabeth, Arthur, Roan, David, Simone and Anna, leaving them stranded on an inhospitable planet that has suddenly become a battlefield. As the battle ends, the lone SPT standing lands next to the terrified group and opens up revealing a pilot, who simply announces to them, "The Earth has been targeted".
The robots who destroyed the UN base were the creation of the Grados, an alien race, from the Udoria system, who came to the Sol system for the purpose of conquest, seeing an easy victory as the two superpowers raged against each other to exhaustion—however, this could also be described as an act of pre-emptive self-defense; the Gradosian supercomputers have determined that humanity will eventually cease its infighting and become powerful enou