Young Gwenni Morgan has a gift. She can fly in her sleep. She's also fond of strawberry whip, detective stories and asking difficult questions. When a neighbour mysteriously vanishes, she resolves to uncover the secret of his disappearance and return him to his children. She truthfully records what she sees and hears: but are her deductions correct? What is the real truth? And what will be the consequences - for Gwenni, her family and her community - of finding it out?