300 years ago, the interstellar colonization transport, The Mesopotamia, had an accident, setting mankind down on the surface of Terra II. The only survivors were six males. Due to a twist of events, the hard-working Otaru visits the run-down Pioneer Museum, where, remembering his childhood, he sees the painting of a woman, titled: “In the memory of the human female.” Suddenly a trap door opens under him, dropping him into a room with a hibernation capsule containing a beautiful female android, a so-called Marionette.