Satsuki's lover Hitoshi dies suddenly. She is unable to get over his death and is mired in deep sadness. Satsuki keeps thinking about the Moonlight Shadow phenomenon, which she heard about in the past. The Moonlight Shadow phenomenon is a mysterious event that allows a person to meet the dead at the end of a full moon.
An inventor of robotics technology is robbed by his girlfriend and business partner and sent to the future via cryogenic sleep. But when he awakes thirty years later, he is assisted by a humanoid robot originally his own creation.