Jennifer, a woman planning to fly to New York to see her ex, gets stuck in an elevator with a man named Guy. As they try to find a way out, they start talking and eventually develop a connection. After sharing a bottle of wine and stories, they end up having sex. However, their situation takes a dark turn when Guy reveals his true identity as John, a security guard who deliberately trapped Jennifer in the elevator. He had been obsessed with her and wanted to keep her for himself. A violent confrontation ensues, and Jennifer manages to overpower John. She then gets help, but John escapes and kills several people, including his partner and the partner's girlfriend. In the end, Jennifer tracks down John and sets him on fire, burning him alive in a garbage dump.
Here are the key facts extracted from the text:
1. Jennifer and Guy get stuck in an elevator.
2. The elevator is in a building where Jennifer works.
3. Jennifer was planning to fly to New York to see her ex.
4. Guy is actually a security guard named John.
5. John had been watching Jennifer and wanted to meet her.
6. John deliberately trapped Jennifer in the elevator.
7. Jennifer and John eventually escape from the elevator.
8. John attacks Jennifer, but she fights back and escapes.
9. John kills his security partner and the partner's girlfriend.
10. John tries to kill Jennifer, but she outsmarts him and escapes.
11. Jennifer attacks John and leaves him for dead in a garbage can.
12. Jennifer sets John on fire using a cigar and gasoline.