From Tokyopop:
The discovery of an alien organic vessel submerged in the ocean reveals a plot to unleash planetary destruction ... a collective of evil scientists called the Reclaimers works to hasten mankind's extinction. As one of Earth's defenders, Hime Utsumiya fights on a team of mecha called Brain Powered's to combat them. Unfortunately the Reclaimers also have these mecha, and mankind's fate hangs in the balance ...