Alex knows her daughter would never wander off in a strange place. So when her three-year-old vanishes from an idyllic beach wedding, Alex immediately believes the worst. The hunt for Lottie quickly becomes a world-wide search, but it's not long before suspicion falls on her mother. Why wasn't she watching Lottie? And with all eyes on her, Alex fears they'll never uncover the truth unless she takes matters into her own hands.