Jo's world fractures when gunmen attack the luxurious Spanish hotel where she's holidaying with family and friends. The ensuing horror puts lives at risk and exposes secrets.

Even with her own family in danger, Jo works to save people from the hotel shooters.

Events in the hotel reach their explosive climax, leaving an unwilling Jo branded a hero.

The tragedy's aftermath sees Jo filled with self-loathing but dubbed a hero; she must deal with her guilt and her friends' recriminations in order to move forward again.