When Olivia's mother, who is 10 years old, went on a business trip on weekends, she left Olivia alone at home, with her 17-year-old brother Miles in charge. On the first night, Olivia fell asleep on the sofa and woke up unaware of how late it was already. She walked her dog Charlie without Miles' knowledge and witnessed a young woman kidnapped on an empty street in New York City. Olivia ran home to tell, but he didn't believe her. The next morning, she explained what had happened to the local police, and they didn't believe her either! Only a cynical female detective Dottie (played by Oscar winning Susan Sarandon) listened to Olivia's words, but she also held a skeptical attitude. Olivia bravely launched her own investigation without hesitation, putting herself in a dangerous situation. Her practical spirit ignited one extraordinary adventure after another. Can she outsmart bad people and persuade her brother and Dotty to believe the truth in time to save the day?