Komukai Riko is a youthful single lady and works for an occasion arranging organization. She is viewed as normal concerning her character and appearance. At some point, her collaborator specifies individual of a large scale manufacturing model. Komukai Riko inquires as to whether she could be such an individual for a large scale manufacturing model and she responds to her inquiry certifiably. Close to this time, she ends up seeing plastic model Zaku at a local store. Zaku is a robot from TV anime series Mobile Suit Gundam. She becomes keen on plastic models and moves herself to make her most memorable plastic model.