Nanako Shichigusa is the nurse, maid and housekeeper of Dr. Kyoji Ogami, an internationally noted surgeon, scientist and bio-engineer. She's also a klutz - wherever she goes, she breaks dishes, incinerates meals, slips, trips, and falls. She wears short skirts that hike up to show her panties and low-cut tops that accentuate her constantly jiggling cleavage. She frequently loses even these minimal garments, always when an audience is present. Ogami is also involved in a top-secret bio-medical program involving 'Green', an alien creature with three strands of DNA in its cells. The experiments are supervised by the Pentagon and the Vatican. Ogami plans to use Green and Nanako to build the ultimate cybernetic combat robot, the Venus 2000.