Thirteen years after their sudden disappearance,an alien race known as the Heterodyne resurface without warning. To combat theHeterodyne, three office workers from the 21st Century Security Corporationoperate Dai-Guard - a giant robot no longer regarded as an oversizedpaperweight. Unfortunately, Dai-Guard is somewhat obsolete and in disrepair.It's a tough job, but salarymen can also save the world.
AKA - Chikyuu Bouei Kigyou Dai-Guard , Dai-Guard:Terrestrial Defense Corp , Earth Defence Enterprise - Dai Guard , Dai Guard