One is a brilliant scientific mind and only wears costumes that he 3D prints...The other dreams of living in the wild and talking to animals. And yet, eleven-year-old Myles and Beckett are twins. While their older brother Artemis is on a mission to Mars, the two boys spend a night alone in the Fowls' villa. Enough time to befriend a troll whose venom is wanted by all the secret organizations on the planet – human or not...