Sixteen-year-old Claudia grew up in isolation. Her mother's death left her trapped in a remote house, and she was shocked when Grace appeared in the garden like a mirage, breathing fresh, sweet air. During her 16 years with her mother, Claudia has never really come into contact with the outside world, and no one knows about her existence except her mother. Claudia's understanding of interpersonal relationships is full of negative effects brought to her by her mother, and Grace makes her overcome her fears and gradually let her guard down.