Gauche is a diligent but mediocre cellist who plays for a small town orchestra and the local cinema in the early 20th century. He struggles during rehearsals and is often berated by his conductor during preparations for an upcoming performance of Beethoven's Sixth Symphony. Over the course of four nights, Gauche is visited at his mill house home by talking animals as he is practicing.

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.

In a near future, mankind has moved from a drained Earth to the Moon. Rebel acts of terrorism lead to conflicts with the Earth Federal Government. A mysterious entity called Dallos appears to restore hope.