Kikou Souseiki Mospeada

After the Inbit occupy Earth, humanity's survivors on Mars launch a campaign to reclaim their home. The operation collapses before the enemy's strength, leaving soldier Stick stranded alone on the planet he has come to liberate.

He meets Ray and other people who have lived under occupation, forming an unlikely group bound for the enemy stronghold at Reflex Point. Armed with transforming MOSPEADA motorcycles and Legioss machines, they travel across a battered world, where their conflicting motives and experiences test their unity as surely as battles with the invaders.