Kristi, a flight attendant, encounters a wealthy man proposing to a young woman on her flight. The next day, she’s shocked to learn that the same man, Edwin, is her mother’s new fiancé. Suspicious of Edwin’s intentions, Kristi sets out to expose his true nature.

During a visit, Kristi meets Edwin, recognizing him as the man from her flight who gifted a necklace to another woman. Kristi warns her mother, but her concerns are dismissed. Determined, Kristi teams up with the young woman, Isabella, whom Edwin was courting, to expose his deceit. They plan to catch Edwin in the act by confronting him at a hotel, but Kristi’s attempt backfires, leading to a police warning and her mother’s estrangement.

Despite initial setbacks, Kristi and Isabella send warnings to other potential victims. On Edwin’s wedding day, dozens of women he deceived crash the ceremony, exposing his lies. Though Kristi’s mother is devastated, Kristi vows to see Edwin face justice.