THE EARTH IS IN DANGER! Even now, fiendish hands are stretching out from the distant stars to seize the world. From their massive underground complex near Mt. Fuji, the Ultra Guard, an elite unit of the Terrestrial Defense Force, equipped with a squadron of Ultra Hawks, stands vigilant as our decisive first-line to combat the myriad of alien aggressors, who threaten the very existence of our planet. But, unbeknownst to his fellow teammates, Dan Moroboshi, is secretly an extraterrestrial aiding them in their fight to preserve the future of humanity, considered the 7th member of the Ultra Guard :better known as Ultra Seven!