May 9, 2003 - The Japan Aerospace Exploration Agency (JAXA) launches its unmanned spacecraft Hayabusa into orbit. Its mission is to collect samples from a near Earth asteroid named 25143 Itokawa. Hayabusa is scheduled to make contact with the asteroid in November 2005. As the spacecraft approaches its rendezvous date with the asteroid problems arise for the JAXA staff back on Earth.
Kohei Takahara, an astronaut who dies in the line of duty, is legally resurrected as a clone: however, contrary to the scientists' expectations, he reverts to his childhood memories when his twin brother drowned sacrificing his life for Kohei. Kohei's clone discovers the body of his former self mistakenly believing that it is his deceased twin. Reliving his tragic past, he sets off carrying his corpse body to the beautiful hometown where he lived with his now dead mother.
