Kurumi, a young woman, is the beloved girlfriend of Hal. He died suddenly in an airplane accident. She is left feeling sad and depressed, and she retreats to a small home. This soon changes when her grandfather asks for Q01, a humanoid robot.Q01, who assumes the role of Hal to rescue Kurumi from her despair, is sent to Kurumi’s house. As Hal continues to return day after day, and intensifies his efforts, Kurumi slowly opens up to him, and she is able to break free of her depression. There is more to Hal than meets his eye and the two of them will soon discover a surprising truth about their relationship as androids and humans.