Eight-year-old Carmel has always been different - sensitive, distracted, with an heartstopping tendency to go missing. Her mother Beth, newly single, worries about her daughter's strangeness, especially as she is trying to rebuild a life for the two of them on her own.
When she takes Carmel for an outing to a local festival, her worst fear is realised: Carmel disappears into the crowd. Unable to accept the possibility that her daughter might be gone for good, Beth embarks on a mission to find her. Meanwhile, Carmel begins an extraordinary and terrifying journey of her own.