Stephanie (Blake Lively) used to live an ordinary and happy life like many people, until one day, an air crash took the lives of all her loved ones. This huge blow that came out of nowhere made Stephanie fall into endless despair. In order to divert her attention, she did not hesitate to immerse herself in the short-term stimulation brought by drugs, alcohol and sex. One day, Stephanie was shocked to learn that the air crash that caused her to lose everything was actually a carefully planned conspiracy, which meant that her family members actually died of murder. In grief and anger, Stephanie decided to rely on her own strength to investigate the truth of the incident. In the process, Stephanie met a man named Frank, and his appearance made Stephanie's road to solving the case even more difficult.