285 years after mankind migrated to the space colony, the "Lionex Project" started as a new mother computer. A team is launched with a woman, Marie Brandt, as the leader. Her fiancé, Kirk McCrae, will also join as a member. However, Lionex, who has begun to love her designer Marie, begins to harm and eliminate the humans of the colony in order to monopolize her Marie. Kirk is also attacked by a public security robot and thrown away in an underground disposal site. Marie is also taken captive and imprisoned in her ventricle. Kirk heads for the ventricle while defeating the attack of the robot "Clean-up Tom" and the attack of the fake marine android. The time has come to decide the sex between humans and mother computers.