The story revolves around a mysterious mobile app called "Countdown" that claims to predict the exact time of a user's death. The app becomes a central plot point as the characters struggle to understand its true nature and purpose.
The story begins with a group of friends who download the app at a party. One of them, Kurt, is predicted to die in three hours, and despite initial skepticism, she eventually dies under mysterious circumstances.
Quinn, a nurse, becomes increasingly entangled in the mystery of the app. She meets Matt, who has also downloaded the app, and together they try to uncover the truth behind it. They discover that the app is connected to an ancient curse and that they must find a way to break it before it's too late.
As the story unfolds, Quinn and Matt's desperation grows, and they become willing to take drastic measures to survive. They attempt to kill Dr. Sullivan, who is predicted to die before his time, in the hope of breaking the curse. However, their plan is foiled, and Quinn's sister, Jordan, is put in danger.
In a final act of desperation, Quinn decides to sacrifice herself to save her sister. She gives herself a lethal injection, which destroys the devil Ozen, and breaks the curse. Jordan is able to save her sister by giving her an antidote, and the countdown on her phone stops.
The story concludes with Quinn and her family visiting her mother's grave, and Quinn receiving a message on her phone about a new update for the Countdown app, suggesting that the curse may not be fully broken after all.
Here are the key facts from the text:
1. A group of friends downloads a program called Countdown that predicts the date of their deaths.
2. One of the friends, Kurt, is predicted to die in three hours and becomes increasingly paranoid and frightened.
3. Kurt's friend Evan is drunk and offers to drive Kurt home, but Kurt decides to walk instead.
4. Kurt dies after slipping and falling in her bathtub.
5. Evan is involved in a car accident and is taken to the hospital.
6. Quinn, a nurse, takes care of Evan and discovers that he has downloaded the Countdown program.
7. Quinn becomes convinced that the program is real and starts to experience strange and terrifying events.
8. Quinn meets a man named Matt who has also downloaded the program and is trying to find a way to escape his predicted death.
9. Quinn and Matt discover that the program is a curse created by a devil named Ozen.
10. Quinn and Matt try to break the curse by performing a protection ritual, but it fails.
11. Quinn's sister Jordan is also affected by the curse and is predicted to die soon.
12. Quinn tries to kill Dr. Sullivan, who is predicted to die soon, in order to break the curse.
13. Quinn's plan fails, but she is able to save her sister Jordan by giving her an injection that prevents her death.
14. Quinn then kills herself in order to save her sister and break the curse.
15. The curse is lifted, and the countdown stops on Jordan's mobile phone.
16. Quinn's sister Jordan receives a message from the program to update it, implying that the curse may not be fully broken.