Space Runaway Ideon Movie 1 Episode 1

Humanity's pursuit of knowledge leads them to the planet Solo, where they find mysterious remains of a long dead alien civilisation, including the three-part super-robot Ideon, and a powerful warship. Using these, the earthlings sent to investigate the ruins defend themselves in their constant battles against powerful aliens called the Buff Clan, who are in pursuit of Id, the mysterious energy that powers the Ideon.