The Mysterious Case of Betty Blue

Betty Blue is personal companion to Olympia Cartier and worth an estimated $3.8 million. She's also a robot. Betty Blue opens the front door one evening and simply walks away. Why would she do such a thing? Is it a malfunction, or did something else happen? She's like a daughter to Olympia and her industrialist husband Doyle. Olympia is worried about Betty, lost and alone in America, 2030 A.D.